Research Explorer

Your browser does not support JavaScript or JavaScript is not enabled. Without JavaScript some functions of this webapplication may be disabled or cause error messages. To enable JavaScript, please consult the manual of your browser or contact your system administrator.

Researcher

Linda Thienpont

Awards & Distinctions

221 Results

2017

Harmonization of serum thyroid-stimulating hormone measurements paves the way for the adoption of a more uniform reference interval

Linda ThienpontKatleen Van UytfangheLinde De GrandeDries ReyndersBarnali DasJames D. FaixFinlay MacKenzieBrigitte DecallonneAkira HishinumaBruno Lapauw et al.

A1 Journal Article in CLINICAL CHEMISTRY

Improving quality, stability, and comparability of in vitro diagnostic medical devices for thyroid function tests

Linde De GrandeLinda ThienpontTom Coenye

Modern tools for improving comparability and stability of in vitro diagnostic tests

Kenneth GoossensLinda ThienpontTom Coenye

Monitoring the stability of the standardization status of FT4 and TSH assays by use of daily outpatient medians and flagging frequencies

Linde De GrandeKenneth GoossensKatleen Van UytfangheBarnali DasFinlay MacKenzieMaria-Magdalena PatruLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Standardization of free thyroxine measurements allows the adoption of a more uniform reference interval

Linde De GrandeKatleen Van UytfangheDries ReyndersBarnali DasJames D. FaixFinlay MacKenzieBrigitte DecallonneAkira HishinumaBruno LapauwPaul Taelman et al.

A1 Journal Article in CLINICAL CHEMISTRY

Using 'big data' to describe the effect of seasonal variation in thyroid-stimulating hormone

Linde De GrandeKenneth GoossensKatleen Van UytfangheIan HalsallJaeduk Yoshimura NohKoen HensLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

2016

Monitoring of the standardization and harmonization status of FT4 and TSH assays by use of patient medians

Linde De GrandeKenneth GoossensKatleen Van UytfangheLinda Thienpont

2015

A fresh look at the relationship between TSH and free thyroxine in cross-sectional data

Linde De GrandeKatleen Van UytfangheLinda Thienpont

A2 Journal Article in EUROPEAN THYROID JOURNAL

Calculation of non-commutability budgets by t-testing

Kenneth GoossensKatleen Van UytfangheLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Monitoring laboratory data across manufacturers and laboratories: a prerequisite to make 'Big Data' work

Kenneth GoossensKatleen Van UytfanghePatrick J TwomeyLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

On-line flagging monitoring: a new quality management tool for the analytical phase

Kenneth GoossensThomas BrinkmannLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Reference measurement procedure corrected all method trimmed mean: the best of two worlds

Kenneth GoossensLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

The Empower project : a new way of assessing and monitoring test comparability and stability

Linde De GrandeKenneth GoossensKatleen Van UytfangheDietmar StöcklLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Trueness and comparability assessment of widely used assays for 5 common enzymes and 3 electrolytes

Kenneth GoossensKatleen Van UytfangheLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

2014

A 'step-up' approach for harmonization

Katleen Van UytfangheLinde De GrandeLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

A progress report of the IFCC Committee for Standardization of Thyroid Function Tests

Linda ThienpontKatleen Van UytfangheSofie Van HouckeBarnali DasJames D FaixFinlay MacKenzieFrank A QuinnMichael RottmannAnnick Van den Bruel

A2 Journal Article in EUROPEAN THYROID JOURNAL

A statistical basis for harmonization of thyroid stimulating hormone immunoassays using a robust factor analysis model

Dietmar StöcklKatleen Van UytfangheStefan Van AelstLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

High variability in serum estradiol measurements in men and women

Hubert W VesperJulianne C BotelhoMeghan L VidalYasamin RahmaniLinda ThienpontSamuel P Caudill

A1 Journal Article in STEROIDS

Measurements for 8 common analytes in native sera identify inadequate standardization among 6 routine laboratory assays

Hedwig StepmanUlla TiikkainenDietmar StöcklHubert W VesperSelvin H EdwardsHarri LaitinenJonna PelantiLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Patient percentile monitoring: a valuable quality indicator for the examination phase

Linde De GrandeDietmar StöcklKatleen Van UytfangheLinda Thienpont

Verification of reference intervals by the C28 protocol: the alpha error/power trade-off

Kenneth GoossensLinde De GrandeThomas KellerStefan WeberLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

2013

'Good samples make good assays': the problem of sourcing clinical samples for a standardization project

Sofie Van HouckeLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

A fresh look at analytical performance specifications from biological variation

Hedwig StepmanDietmar StöcklPatrick J TwomeyLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Analytical quality and its effect on medical decisions of laboratory tests for the diagnosis and management of thyroid disease - free thyroxine and thyroid-stimulating hormone

Sofie Van HouckeLinda Thienpont

Analytical quality and its effect on medical decisions of laboratory tests for the management of chronic kidney disease : calcium, phosphorus, albumin, 25-hydroxyvitamin D and parathyroid hormone

Hedwig StepmanLinda Thienpont

Commutability assessment by use of external quality assessment surveys: a means to reduce the uncertainty in the commutability decision

Sofie Van HouckePål RustadHedwig StepmanThomas RøraasSverre SandbergLinda Thienpont

A4 Journal Article in KLINISK BIOKEMI I NORDEN

Determination of free thyroid hormones

Linda ThienpontKatleen Van UytfangheKris PoppeBrigitte Velkeniers

A1 Journal Article in BEST PRACTICE & RESEARCH CLINICAL ENDOCRINOLOGY & METABOLISM

Empower project: new integrated EQA design

Linde De GrandeHedwig StepmanDietmar StöcklLinda Thienpont

Harmonization of immunoassays to the all-procedure trimmed mean: proof of concept by use of data from the insulin standardization project

Sofie Van HouckeStefan Van AelstKatleen Van UytfangheLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Isotope-dilution liquid chromatography-tandem mass spectrometry candidate reference method for total testosterone in human serum

Julianne Cook BotelhoChristopher ShackladyHans C CooperSusan S-C TaiKatleen Van UytfangheLinda ThienpontHubert W Vesper

A1 Journal Article in CLINICAL CHEMISTRY

Isotopic abundance yields bias in the assessment of testosterone in a new reference method procedure : reply

Hubert W VesperJulianne Cook BotelhoSusan S-C TaiKatleen Van UytfangheLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Long-term stability of laboratory tests and practical implications for quality management

Sofie Van HouckeHedwig StepmanLinda ThienpontTOM FIERSVeronique StovePedro CouckEllen AnckaertFrans Gorus

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Standardize the serum albumin assay now: calibrate it to 60% of the serum total protein assay

Hedwig StepmanDietmar StöcklLinde De GrandeLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

2012

Calcium, magnesium, albumin, and total-protein measurement in serum as assessed with 20 fresh-frozen single-donation sera

Sofie Van HouckePål RustadHedwig StepmanGunn BB KristensenDietmar StöcklThomas H RøraasSverre SandbergLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Standardization of measurements of 25-hydroxyvitamin D3 and D2

Linda ThienpontHedwig StepmanHubert W Vesper

A1 Journal Article in SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION

Statistical power for commutability testing in the presence of random, sample-related effects by use of the EP14 protocol

Thomas RøraasSofie Van HouckeDietmar StöcklLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Status of serum-calcium, -magnesium, -albumin, and -total-protein measurement in Norway assessed with 20 fresh frozen single donation sera

Sofie Van HouckePål RustadHedwig StepmanGunn KristensenDietmar StöcklThomas RøraasLinda ThienpontSverre Sandberg

Vitamin D status as an international issue: national surveys and the problem of standardization

Christopher T SemposHubert W VesperKaren W PhinneyLinda ThienpontPaul M Coates

A1 Journal Article in SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION

2011

Candidate reference measurement procedures for serum 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 by using isotope-dilution liquid chromatography–tandem mass spectrometry

Hedwig StepmanAn VanderroostKatleen Van UytfangheLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Comments on the manuscript by Anckaert et al., Clin Chim Acta 2010;411:1348-53 reply

Ellen AnckaertKris PoppeKatleen Van UytfangheJohan SchiettecatteWalter FoulonLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Full-scan mass spectral evidence for 3-epi-25-hydroxyvitamin D3 in serum of infants and adults

Hedwig StepmanAn VanderroostDietmar StöcklLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

IFCC International Conventional Reference Procedure for the measurement of free thyroxine in serum

Sofie Van HouckeKatleen Van UytfangheEri ShimizuWataru TaniMasao UmemotoLinda Thienpont

IFCC international conventional reference procedure for the measurement of free thyroxine in serum

Sofie Van HouckeKatleen Van UytfangheEri ShimizuWataru TaniMasao UmemotoLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Long-term stability of clinical laboratory data: sodium as benchmark

Hedwig StepmanDietmar StöcklVeronique StoveTOM FIERSPedro CouckFrans GorusLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Roadmap for harmonization of clinical laboratory measurement procedures

Greg MillerGary MyersMary Lou GantzerStephen E KahnE Ralf SchonbrunnerLinda ThienpontDavid M BunkRobert H ChristensonJohn H EckfeldtStanley F Lo et al.

Editorial material

Status of serum-calcium and -albumin measurement in Argentina assessed in 300 representative laboratories with 20 fresh frozen single donation sera

Hedwig StepmanDietmar StöcklRosana AchemeSandra SesiniDaniel MazziottaLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

The Push Button project

Sofie Van HouckeHedwig StepmanDietmar StöcklLinda Thienpont

2010

FT4 immunoassays may display a pattern during pregnancy similar to the equilibrium dialysis ID-LC/tandem MS candidate reference measurement procedure in spite of susceptibility towards binding protein alterations

Ellen AnckaertKris PoppeKatleen Van UytfangheJohan SchiettecatteWalter FoulonLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Importance of sample-related effects for commutability testing according to the EP14 protocol

Dietmar StöcklHedwig StepmanSofie Van HouckeLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Measurement uncertainty for the analysis of serum 25-hydroxyvitamin D

Hedwig StepmanLinda Thienpont

A1 Journal Article in OSTEOPOROSIS INTERNATIONAL

Report of the IFCC working group for standardization of thyroid function tests: part 1: thyroid-stimulating hormone

Linda ThienpontKatleen Van UytfangheGraham BeastallJames D FaixTamio IeiriW Greg MillerJerald C NelsonCatherine RoninH Alec RossJos H Thijssen et al.

A1 Journal Article in CLINICAL CHEMISTRY

Report of the IFCC working group for standardization of thyroid function tests: part 2: free thyroxine and free triiodothyronine

Linda ThienpontKatleen Van UytfangheGraham BeastallJames D FaixTamio IeiriW Greg MillerJerald C NelsonCatherine RoninH Alec RossJos H Thijssen et al.

A1 Journal Article in CLINICAL CHEMISTRY

Report of the IFCC working group for standardization of thyroid function tests: part 3: total thyroxine and total triiodothyronine

Linda ThienpontKatleen Van UytfangheGraham BeastallJames D FaixTamio IeiriW Greg MillerJerald C NelsonCatherine RoninH Alec RossJos H Thijssen et al.

A1 Journal Article in CLINICAL CHEMISTRY

Serum testosterone levels measured by isotope dilution-liquid chromatography–tandem mass spectrometry in postmenopausal women versus those in women who underwent bilateral oophorectomy

Hong N BuiEduard A StruysFrans MartensWillem de RondeLinda ThienpontPeter KenemansMarieke VerhoevenCornelis JakobsHilde M DijstelbloemMarinus A Blankenstein

A1 Journal Article in ANNALS OF CLINICAL BIOCHEMISTRY

Standardization activities in the field of thyroid function tests: a status report

Linda ThienpontKatleen Van UytfangheSofie Van Houcke

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Standardization of insulin and C-peptide - A status report

Katleen Van UytfangheLinda Thienpont

A1 Journal Article in MEDECINE NUCLEAIRE-IMAGERIE FONCTIONNELLE ET METABOLIQUE

Traceability to a common standard for protein measurements by immunoassay for in-vitro diagnostic purposes

Linda ThienpontSofie Van Houcke

A1 Journal Article in CLINICA CHIMICA ACTA

2009

Method validation across the disciplines: critical investigation of major validation criteria and associated experimental protocols

Dietmar StöcklHeidi D'HondtLinda Thienpont

A1 Journal Article in JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES

Specifications for trueness and precision of a reference measurement system for serum/plasma 25-hydroxyvitamin D analysis

Dietmar StöcklPatrick M SlussLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Toward standardization of insulin immunoassays

Greg W. MillerLinda ThienpontKatleen Van UytfanghePenelope M. ClarkPatrik LindstedtGoran NilssonMichael W. Steffes

A1 Journal Article in CLINICAL CHEMISTRY

Traceability in laboratory medicine

Hubert HW VesperLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

2008

A major step forward in the routine measurement of serum free thyroid hormones

Linda Thienpont

Editorial material

About the z-multiplier in total error calculations

Dietmar StöcklLinda Thienpont

A1 Journal Article in Clinical chemistry and laboratory medicine

Accuracy in Clinical Chemistry - Who Will Kiss Sleeping Beauty Awake?

Linda Thienpont

A1 Journal Article in Clinical chemistry and laboratory medicine

Calculation of measurement uncertainty - Why bias should be treated separately

Linda Thienpont

A1 Journal Article in Clinical chemistry

Comparison of a routine LC-MS/MS assay for testosterone against an isotope dilution GCMS reference method

BG KeevilLJ OwenS BlinckoCS RamsayPM SlussKatleen Van UytfangheLinda Thienpont

Introduction of non-linearity by data transformation in method comparison and commutability studies

Dietmar StöcklLinda Thienpont

A1 Journal Article in Clinical chemistry and laboratory medicine

State of the art in trueness and interlaboratory harmonization for 10 analytes on general clinical chemistry

W Greg MillerGary L MyersEdward R AshwoodAnthony A KilleenEdward WangGlenn In EhlersDavid HassernerStanley F LoDavid SeccombeLothar Siekmann et al.

A1 Journal Article in ARCHIVES OF PATHOLOGY & LABORATORY MEDICINE

State-of-the-art of serum testosterone measurement by isotope dilution-liquid chromatography-tandem mass spectrometry

Linda ThienpontKatleen Van UytfangheStuart BlinckoCarol S. RamsayHui XieRobert C. DossBrian G. KeevilLaura J. OwenAlan L. RockwoodMark M. Kushnir et al.

A1 Journal Article in Clinical chemistry

Trueness verification of actual creatinine assays in the European market demonstrates a disappointing variability that needs substantial improvement : an international study in the framework of the EC4 Creatinine Standardization Working Group

Joris DelangheChrista CobbaertMarie Madeleine GalteauAimo HarmoinenRob JansenRolf KrusePaeivi LaitinenLinda ThienpontBrigitte WuytsCas Weykamp et al.

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

2007

Immunocytochemistry on liquid-based cytologic preparations as an adjunct in fine needle aspiration cytology of the thyroid

Linda ThienpontMarleen PraetM ChosiaGitte De Boeck

Measurement of free thyroxine in laboratory medicine - proposal of measurand definition

Linda ThienpontG BEASTALLND CHRISTOFIDESJD FAIXT IEIRIWG MILLERR MILLERJC NELSONHA ROSSC RONIN et al.

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

New liquid chromatography/electrospray ionisation tandem mass spectrometry measurement procedure for quantitative analysis of human insulin in serum

Katleen Van UytfangheD Rodriguez-CabaleiroDietmar StöcklLinda Thienpont

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

Pilot study for the Standardization of insulin immunoassays with isotope dilution-liquid chromatography/tandem mass spectrometry

D RODRIGUEZ-CABALEIROKatleen Van UytfangheVeronique StoveTOM FIERSLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Proposal of a candidate international conventional reference measurement procedure for free thyroxine in serum

Linda ThienpontG BEASTALLND CHRISTOFIDESJD FAIXT IEIRIV JARRIGEWG MILLERR MILLERJC NELSONC RONIN et al.

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

2006

Use of frozen sera for FT4 standardization: Investigation by equilibrium dialysis combined with isotope dilution-mass spectrometry and immunoassay

Katleen Van UytfangheDietmar StöcklHA ROSSLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

2005

Analytic bias of thyroid function tests - Analysis of a College of American Pathologists fresh frozen serum pool by 3900 clinical laboratories

BW STEELEE WANGGG KLEELinda ThienpontSJ SOLDINLJ SOKOLLWE WINTERSA FUHRMANRJ ELIN

A1 Journal Article in ARCHIVES OF PATHOLOGY & LABORATORY MEDICINE

Calculation of measurement uncertainty in clinical chemistry

Dietmar StöcklKatleen Van UytfangheDR CABALEIROLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Confidence intervals and significance testing - A tutorial

D RODRIGUEZ-CABALEIROKatleen Van UytfangheDietmar StöcklLinda Thienpont

Confidence intervals and significance testing - A tutorial

Diego Rodriguez CabaleiroKatleen Van UytfangheDietmar StöcklLinda Thienpont

Creatinine measurement - State of the art in accuracy and interlaboratory harmonization

WG MILLERGL MYERSER ASHWOODAA KILLEENE WANGLinda ThienpontL SIEKMANN

A1 Journal Article in ARCHIVES OF PATHOLOGY & LABORATORY MEDICINE

Cytopathology in Belgium

M DRIJKONINGENJP BOGERSC BOURGAINClaude CuvelierP DELVENNEC GOMPELL SAERENSLinda ThienpontB VAN DAMMEL VAN EYCKEN et al.

A1 Journal Article in CYTOPATHOLOGY

Eu project G6RD-CT-2001-00587: Report on the establishment of a reference measurement system for total thyroxine in human serum

Katleen Van UytfangheLinda ThienpontJC MARRIOTP STOKESL SIEKMANNA KESSLERD BUNKS TAI

Feasibility of standardization of serum C-peptide immunoassays with isotope-dilution liquid chromatography-tandem mass spectrometry

D CABALEIRODietmar StöcklLinda Thienpont

Feasibility study of the use of frozen human sera in split-sample comparison of immunoassays with candidate reference measurement procedures for total thyroxine and total triiodothyronine measurements

Linda ThienpontKatleen Van UytfangheJ MarriottP StokesL SiekmannA KesslerD BunikS Tai

A1 Journal Article in CLINICAL CHEMISTRY

Improvement of sample pretreatment prior to analysis of C-peptide in serum by isotope-dilution liquid chromatography/tandem mass spectrometry

D RODRIGUEZ-CABALEIROLinda Thienpont

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

Metrologic traceability of total thyroxine measurements in human serum: Efforts to establish a network of reference measurement laboratories

Linda ThienpontKatleen Van UytfangheJ MARRIOTP STOKESL SIEKMANNA KESSLERD BUNKS TAI

A1 Journal Article in CLINICAL CHEMISTRY

Serum ionized versus total magnesium in progressive renal failure - a cross-sectional study

K DEWITTEAnnemieke DhondtDietmar StöcklNorbert LameireLinda Thienpont

A1 Journal Article in TRACE ELEMENTS AND ELECTROLYTES

Validation of 5 routine assays for serum free testosterone with a candidate reference measurement procedure based on ultrafiltration and isotope dilution-gas chromatography-mass spectrometry

Katleen Van UytfangheDietmar StöcklJean KaufmanTOM FIERSAndreas De LeenheerLinda Thienpont

A1 Journal Article in CLINICAL BIOCHEMISTRY

2004

Application of an isotope dilution-gas chromatography-mass spectrometry measurement procedure for the evaluation of 5 routine assays for serum free testosterone (FTe)

Linda ThienpontKatleen Van UytfangheDietmar StöcklJM KAUFMANT FIERS

Chewing-GUM - Can it make measurement uncertainty digestable?

Diego Rodriguez CabaleiroDietmar StöcklLinda Thienpont

Collision-induced dissociation of the [M-2H](2-) ion of C-peptide

Dietmar StöcklDR CABALEIROLinda Thienpont

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

Development of a simplified sample pretreatment procedure as part of an isotope dilution-liquid chromatography/tandem mass spectrometry candidate reference measurement procedure for serum total thyroxine

Katleen Van UytfangheDietmar StöcklLinda Thienpont

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

Differences in serum ionized and total magnesium values during chronic renal failure between nondiabetic and diabetic patients - A cross-sectional study

K DEWITTEAnnemieke DhondtMimi GiriDietmar StöcklRaoul RottiersNorbert LameireLinda Thienpont

A1 Journal Article in DIABETES CARE

Error messages when calculating chi-square statistics with Microsoft EXCEL (R)

DR CABALEIRODietmar StöcklLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Evaluation of a candidate reference measurement procedure for serum free testosterone based on ultrafiltration and isotope dilution-gas chromatography-mass spectrometry

Linda ThienpontKatleen Van UytfangheDietmar StöcklJean KaufmanTOM FIERSHA ROSS

Evaluation of a candidate reference measurement procedure for serum free testosterone based on ultrafiltration and isotope dilution-gas chromatography-mass spectrometry

Katleen Van UytfangheDietmar StöcklJM KAUFMANT FIERSHA ROSSAndreas De LeenheerLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

IFCC reference system for measurement of hemoglobin A(lc) in human blood and the National Standardization Schemes in the United States, Japan, and Sweden: A method-comparison study

W HOELZELC WEYKAMPJO JEPPSSONK MIEDEMAJR BARRI GOODALLT HOSHINOWG JOHNU KOBOLDR LITTLE et al.

A1 Journal Article in CLINICAL CHEMISTRY

Interpreting method comparison studies by use of the Bland-Altman plot: Reflecting the importance of sample size by incorporating confidence limits and predefined error limits in the graphic

Dietmar StöcklDR CABALEIROKatleen Van UytfangheLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Metrological traceability of calibration in the estimation and use of common medical decision-making criteria

Linda ThienpontKatleen Van UytfangheDR CABALEIRO

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Peculiarities and problems with the EXCEL (R) F-test

Dietmar StöcklDR CABALEIROLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

2003

Application of a C-peptide electrospray ionization-isotope dilution-liquid chromatography-tandem mass spectrometry measurement procedure for the evaluation of five C-peptide immunoassays for urine

Colette FierensDietmar StöcklD BaetensAndreas De LeenheerLinda Thienpont

A1 Journal Article in JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES

Pilot external quality assessment survey for post-market vigilance of in vitro diagnostic medical devices and investigation of trueness of participants results

Linda ThienpontDietmar StöcklJ KRATOCHVILAB FRIEDECKYM BUDINA

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Standardization of C-peptide measurements in urine by method comparison with isotope-dilution mass spectrometry

C FierensDietmar StöcklD BaetensAndreas De LeenheerLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Trueness verification in European external quality assessment schemes: time to care about the quality of the samples

Linda ThienpontDietmar StöcklB FRIEDECKYJ KRATOCHVILAM BUDINA

A1 Journal Article in SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION

2002

Application of the Bland-Altman plot for interpretation of method-comparison studies: A critical investigation of its practice.

Katy DewitteColette FierensDietmar StöcklLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Approved IFCC reference method for the measurement of HbA(1c) in human blood.

JO JEPPSSONU KOBOLDJ BARRA FINKEW HOELZELT HOSHINOK MIEDEMAA MOSCAP MAURIR PARONI et al.

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Reference measurement systems in clinical chemistry

Linda ThienpontKatleen Van UytfangheAndreas De Leenheer

A1 Journal Article in CLINICA CHIMICA ACTA

Standardization of serum-ionized magnesium to the reference system for serum total magnesium.

Katy DewitteM UMEMOTOW TANIDietmar StöcklLinda Thienpont

A1 Journal Article in TRACE ELEMENTS AND ELECTROLYTES

The ionized fraction of serum total magnesium in hemodialysis patients: is it really lower than in healthy subjects?

Katy DewitteAnnemieke DhondtNorbert LameireDietmar StöcklLinda Thienpont

A1 Journal Article in CLINICAL NEPHROLOGY

2001

A convenient method for the generation of negative and positive electrospray ionization mass spectra of proteins by gas-phase admission of volatile bases and acids via the nebulizing gas

Colette FierensDietmar StöcklLinda ThienpontAndreas De Leenheer

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

Models for combining random and systematic errors. Assumptions and consequences for different models.

PH PETERSENDietmar StöcklJO WESTGARDS SANDBERGK LINNETLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Reference intervals for serum total and ionized magnesium: facts and fiction

Katy DewitteDietmar StöcklLinda Thienpont

Strategies for determination of insulin with tandem electrospray mass spectrometry : implications for other analyte proteins?

Colette FierensDietmar StöcklLinda ThienpontAndreas De Leenheer

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

2000

Evaluating clinical accuracy of systems for self-monitoring of blood glucose by error grid analysis - Comment on constructing the "upper A-line".

Dietmar StöcklKaty DewitteColette FierensLinda Thienpont

A1 Journal Article in DIABETES CARE

Evaluation of intrinsic and routine quality of serum total magnesium measurement.

Katy DewitteDietmar StöcklM VAN DE VELDELinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Matrix effect in the quantitative analysis of urinary C-peptide by liquid chromatography tandem mass spectrometry

Colette FierensLinda ThienpontDietmar StöcklAndreas De Leenheer

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

Overcoming practical limitations for the application of ultrafiltration in sample preparation for liquid chromatography/mass spectrometry of small proteins

Colette FierensLinda ThienpontDietmar StöcklAndreas De Leenheer

A1 Journal Article in ANALYTICAL BIOCHEMISTRY

Quantification of glycohemoglobin in blood by mass spectrometry applying multiple-reaction monitoring

E WillekensLinda ThienpontDietmar StöcklU KoboldW HoelzelAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Quantitative analysis of urinary C-peptide by liquid chromatography-tandem mass spectrometry with a stable isotopically labelled internal standard

Colette FierensLinda ThienpontDietmar StöcklE WillekensAndreas De Leenheer

A1 Journal Article in JOURNAL OF CHROMATOGRAPHY A

Towards a reference method for serum free thyroxine based on isotope dilution mass spectrometry

Colette FierensDietmar StöcklLinda ThienpontAndreas De Leenheer

A2 Journal Article in IMMUNO-ANALYSE & BIOLOGIE SPECIALISEE

1999

Isotope dilution-gas chromatography/mass spectrometry and liquid chromatography/electrospray ionization-tandem mass spectrometry for the determination of triiodo-L-thyronine in serum

Linda ThienpontColette FierensAndreas De LeenheerL Przywara

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

Measurement of serum sodium and potassium with direct ion-selective electrode systems.

Katy DewitteDietmar StöcklLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

Quality specifications for reference methods.

Linda Thienpont

A1 Journal Article in SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION

Reliability of measurement of ionized magnesium in ultrafiltrate.

Katy DewitteDietmar StöcklLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Serum complexed magnesium - A cautionary note on its estimation and its relevance for standardizing serum ionized magnesium.

Linda ThienpontKaty DewitteDietmar Stöckl

A1 Journal Article in CLINICAL CHEMISTRY

Survey of serum potassium reference measurements.

Jean Van NuwenborgLinda ThienpontDietmar StöcklKW DAVIESSC SMITHV PALICKAB FRIEDECKYM BERANEKJ KRATOCHVILA

A1 Journal Article in ANNALS OF CLINICAL BIOCHEMISTRY

The characterisation of cortisol concentrations in a reference serum panel (IRMM/IFCC-451)

Linda ThienpontAndreas De LeenheerL SiekmannN KristiansenT LinsingerH SchimmelJ Pauwels

pH dependency of serum ionised calcium.

Katy DewitteDietmar StöcklLinda Thienpont

A1 Journal Article in LANCET

1998

A reference system for cortisol.

Linda Thienpont

A1 Journal Article in CLINICAL BIOCHEMISTRY

Assessment of the state-of-the-art trueness and precision of serum total-calcium and glucose measurements in Finnish laboratories : the QSL-Finland study

S LinkoJJ HimbergLinda ThienpontDietmar StöcklAndreas De Leenheer

A1 Journal Article in SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION

Efforts by industry toward standardization of serum estradiol-17β measurements

Linda ThienpontAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Intrinsic and routine quality of serum total potassium measurement as investigated by split sample measurement with an ion chromatography candidate reference method.

Linda ThienpontJean Van NuwenborgDietmar Stöckl

A1 Journal Article in CLINICAL CHEMISTRY

Isotope dilution-liquid chromatography/electrospray ionization-tandem mass spectrometry for the determination of serum thyroxine as a potential reference method

Veronique De BrabandereP HouDietmar StöcklLinda ThienpontAndreas De Leenheer

A1 Journal Article in RAPID COMMUNICATIONS IN MASS SPECTROMETRY

On the use of trimethylchlorosilane in methanol for methylation of thyroxine prior to perfluoroacylation and isotope dilution-gas chromatography/mass spectrometry

Veronique De BrabandereDietmar StöcklLinda ThienpontAndreas De Leenheer

A1 Journal Article in JOURNAL OF MASS SPECTROMETRY

Prolactin and colorectal cancer: Is there a connection?

D BAERTC MATTHYSJP GILLARDINL LEPOUTRELinda ThienpontJean KaufmanClaude CuvelierMartine De Vos

A1 Journal Article in ACTA GASTRO-ENTEROLOGICA BELGICA

Standardization of ionized magnesium by correlation with total magnesium.

Katy DewitteDietmar StöcklLinda Thienpont

A1 Journal Article in SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION

Standardization of steroid immunoassays - In theory an easy task.

Linda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Validity of linear regression in method comparison studies: is it limited by the statistical model or the quality of the analytical input data?

Dietmar StöcklKaty DewitteLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

1997

13C-NMR and mass spectral data of steroids with a 17,17-dialkyl-18-nor-13(14)-ene substructure

Veronique De BrabandereLinda ThienpontDietmar StöcklAndreas De Leenheer

A1 Journal Article in JOURNAL OF LIPID RESEARCH

Current stage of standardization of measurements of specific polypeptides and proteins discussed in light of steps needed towards a comprehensive measurement system

Dietmar StöcklCarlo FranziniJoseph KratochvílaJonathan MiddleCarmen RicósLinda Thienpont

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

Graphical interpretation of analytical data from comparison of a field method with a Reference Method by use of difference plots.

PH PETERSENDietmar StöcklO BLAABJERGB PEDERSENE BIRKEMOSELinda ThienpontJF LASSENJ KJELDSEN

A1 Journal Article in CLINICAL CHEMISTRY

Ion chromatography as reference method for serum cations.

Linda ThienpontJean Van NuwenborgDietmar Stöckl

A1 Journal Article in JOURNAL OF CHROMATOGRAPHY A

Practical aspects of suppressed ion chromatography for cations in human serum.

JE VANNUWENBORGDietmar StöcklLinda Thienpont

A1 Journal Article in JOURNAL OF CHROMATOGRAPHY A

Quantitative determination of amphetamine and α-phenylethylamine enantiomers in judicial samples using capillary gas chromatography

Jan Van BocxlaerWilly LambertLinda ThienpontAndreas De Leenheer

A1 Journal Article in JOURNAL OF ANALYTICAL TOXICOLOGY

State-of-the-art of serum total calcium measurement as investigated by split-sample measurement with an ion chromatography candidate reference method.

JE VANNUWENBORGDietmar StöcklLinda Thienpont

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

The certification of estradiol-17ß in three lyophilized serum materials (CRM 576, CRM 577 and CRM 578)

Linda ThienpontAndreas De LeenheerL Dirscher

Tissue distribution of amphetamine isomers in a fatal overdose

Evelyne MeyerJan Van BocxlaerInge DirinckWilly LambertLinda ThienpontAndreas De Leenheer

A1 Journal Article in JOURNAL OF ANALYTICAL TOXICOLOGY

1996

Accuracy of cortisol measurements: evaluation of three routine methods

Linda ThienpontAndreas De Leenheer

Accuracy-based assessment of proficiency testing results with serum from single donations : possibilities and limitations

Dietmar StöcklJC LibeerH ReinauerLinda ThienpontAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Analytical specifications of reference methods compilation and critical discussion.

Dietmar StöcklC FRANZINIJ KRATOCHVILAJ MIDDLEC RICOSL SIEKMANNLinda Thienpont

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

Calibration for isotope dilution mass spectrometry : description of an alternative to the bracketing procedure

Linda ThienpontBenedikt Van NieuwenhoveDietmar StöcklAndreas De Leenheer

A1 Journal Article in JOURNAL OF MASS SPECTROMETRY

Candidate reference method for determining serum cortisol based on isotope dilution-gas chromatography/mass spectrometry using heptafluorobutyrilation as derivatization method

Linda ThienpontVeronique De BrabandereDietmar StöcklAndreas De Leenheer

A1 Journal Article in ANALYTICAL BIOCHEMISTRY

Characterization and classification of external quality assessment schemes (EQA) according to objectives such as evaluation of method and participant bias and standard deviation.

JC LIBEERH BAADENHUIJSENCG FRASERPH PETERSENC RICOSDietmar StöcklLinda Thienpont

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

Determination of reference method values by isotope dilution gas chromatography mass spectrometry : a five years' experience of two European Reference Laboratories

Linda ThienpontB VanNieuwenhoveDietmar StöcklH ReinauerAndreas De Leenheer

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

External quality assessment: Currently used criteria for evaluating performance in European countries, and criteria for future harmonization.

C RICOSH BAADENHUIJSENJC LIBEERPH PETERSENDietmar StöcklLinda ThienpontCG FRASER

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

Four frequently used test systems for serum cholesterol evaluated by isotope dilution gas chromatography-mass spectrometry candidate reference method

Linda ThienpontKatrien Van LanduytDietmar StöcklAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Identification of a-Phenylethylamine in Judicial Samples

Evelyne MeyerJan Van BocxlaerWilly LambertLinda ThienpontAndreas De Leenheer

A2 Journal Article in Journal Anal. Toxicol., 20, pp. 116-120, 4 figg., 1 tab

Identification of α-phenylethylamine in judicial samples

Evelyne MeyerJan Van BocxlaerWilly LambertLinda ThienpontAndreas De Leenheer

A1 Journal Article in JOURNAL OF ANALYTICAL TOXICOLOGY

Meeting report: First and second estradiol international workshops.

Linda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

On establishment of common reference intervals in laboratory medicine.

PH PETERSENCG FRASERC RICOSDietmar StöcklJC LIBEERH BAADENHUIJSENLinda Thienpont

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

Proposed guidelines for the internal control of results in the medical laboratory

P HYLTOFT PETERSENC RICOSDietmar StöcklJ LIBEERH BAADENHUUSENC FRASERLinda Thienpont

A2 Journal Article in Eur. J. Clin. Biochem., 34, pp. 983-999, 11 figg., 3 tabb

Proposed guidelines for the internal quality control of analytical results in the medical laboratory - Discussion

PH PETERSENC RICOSDietmar StöcklJC LIBEERH BAADENHUIJSENC FRASERLinda Thienpont

Editorial material

Validation of candidate reference methods based on ion chromatography for determination of total sodium, potassium, calcium and magnesium in serum through comparison with flame atomic emission and absorption spectrometry.

Linda ThienpontJE VANNUWENBORGH REINAUERDietmar Stöckl

A1 Journal Article in CLINICAL BIOCHEMISTRY

1995

3 ROUTINE METHODS FOR SERUM CORTISOL EVALUATED BY COMPARISON WITH AN ISOTOPE-DILUTION GAS-CHROMATOGRAPHY MASS-SPECTROMETRY METHOD.

VI DE BRABANDERELinda ThienpontDietmar StöcklAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Analytical quality specification for reference methods and operating specifications for networks of reference laboratories - Discussion paper from the members of the external quality assessment (EQA) Working Group B on target values in EQAS.

Linda ThienpontC FRANZINIJ KRATOCHVILAJ MIDDLEC RICOSL SIEKMANNDietmar Stöckl

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

Analytical qualtity specifications for reference methods and operating specifications for networks of reference laboratories. Recommendations of the European EQA-Organizers Working Group B

Linda ThienpontC FRANZINIJ KRATOCHVILAJ MIDDLEC RICOSL SIEKMANNDietmar Stöckl

A2 Journal Article in Eur. J. Clin. Chem. Clin. Biochem., 33, pp. 949-957, 1 fig, 3 tabb

Candidate reference method for determining serum creatinine by isocratic HPLC : validation with isotope dilution gas chromatography-mass spectrometry and application for accuracy assessment of routine test kits

Linda ThienpontKG Van LanduytDietmar StöcklAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Determination of reference method values for serum aldosterone, cortisol, 17ß-estradiol, progesterone, testosterone, thyroxine and theophylline by isotope dilution gas chromatography-mass spectrometry : a five years' experience of two European laboratories

Benedikt Van NieuwenhoveVeronique De BrabandereKatrien Van LanduytLinda ThienpontAndreas De LeenheerDietmar StöcklH Reinauer

Evaluation of 2-iminoimidazolidin-4-one and thymine as respective internal standards for normal-phase and reversed-phase high-performance liquid chromatographic determination of creatinine in human serum

Linda ThienpontKG VANLANDUYTDietmar StöcklWim SaeyensDenis De KeukeleireAndreas De Leenheer

A1 Journal Article in JOURNAL OF CHROMATOGRAPHY B-BIOMEDICAL APPLICATIONS

Ion chromatography as potential reference methodology for the determination of total sodium and potassium in human serum.

Linda ThienpontJE VANNUWENBORGDietmar Stöckl

A1 Journal Article in JOURNAL OF CHROMATOGRAPHY A

Isotope dilution mass spectrometry and implementation of a common accuracy base for routine medical laboratory analysis : practice and prospects

Linda ThienpontDietmar StöcklAndreas De Leenheer

A1 Journal Article in JOURNAL OF MASS SPECTROMETRY

Kodak Ektachem theophylline assay

Linda ThienpontB VANNIEUWENHOVEAndreas De LeenheerDietmar Stöckl

A1 Journal Article in CLINICAL CHEMISTRY

Networks of reference laboratories

L SIEKMANB DOUMASLinda ThienpontG SCHUMANN

A2 Journal Article in Eur. J. Clin. Chem. Clin. Biochem., 33, pp. 1013-1017

Networks of reference laboratories.

L SIEKMANNBT DOUMASLinda ThienpontG SCHUMANN

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL CHEMISTRY AND CLINICAL BIOCHEMISTRY

Novel perfluoroacyl derivatives of corticosteroids and related substances for potential use in quantitative gas chromatography mass spectrometry

Dietmar StöcklLinda ThienpontVeronique De BrabandereAndreas De Leenheer

A1 Journal Article in JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY

Three routine methods for serum cortisol evaluated by comparison with an isotope dilution gas chromatography-mass spectrometry method

Veronique De BrabandereLinda ThienpontDietmar StöcklAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

α-Phenylethylamine identified in judicial samples

Evelyne MeyerJan Van BocxlaerWilly LambertLinda ThienpontAndreas De Leenheer

A1 Journal Article in FORENSIC SCIENCE INTERNATIONAL

1994

Candidate reference method for determining serum theophylline applied to target-setting in external quality assessment and routine method evaluation

Linda ThienpontB VANNIEUWENHOVEDietmar StöcklAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Determination of Serum Glucose-Concentration by a Candidate Definitive Method - Reply.

Dietmar StöcklLinda Thienpont

A1 Journal Article in CLINICAL CHEMISTRY

Determination of creatinine in human serum using isocratic HPLC with an aluminium oxide stationary phase

KG VANLANDUYTLinda ThienpontAndreas De LeenheerDietmar Stöckl

A1 Journal Article in JOURNAL OF CHROMATOGRAPHIC SCIENCE

Development of a new method for the determination of thyroxine in serum based on isotope dilution gas chromatography mass spectrometry

Linda ThienpontVeronique De BrabandereDietmar StöcklAndreas De Leenheer

A1 Journal Article in BIOLOGICAL MASS SPECTROMETRY

EQA with accuracy-based kits: bringing together consensus/reference method targets and method dependent targets

Linda ThienpontDietmar Stöckl

Formation of 18-Nor-13(14)-ene-17-beta-methyl Steroids During Perfluoro-acylation of Anabolic Steroids Bearing a Tertiary 17-Hydroxy Group and Compounds Related to Corticosteroids.

Dietmar StöcklR DESAGHERLinda ThienpontGreet DebruyckereCarlos Van Peteghem

A1 Journal Article in ANALYST

Ion Chromatography as a Potential Reference Methodology for the determination of total Calcium and Magnesium in Human Serum.

Linda ThienpontJE VANNUWENBORGDietmar Stöckl

A1 Journal Article in ANALYTICAL CHEMISTRY

Proposal for the Establishment of a European Steroid Reference System for the Medical Laboratory

Linda ThienpontAndreas De Leenheer

A4 Journal Article in Newsletters, 9

Reference Methods and Reference Method Values

Linda ThienpontDietmar Stöckl

Reference Methods and Reference Method Values

Linda ThienpontDietmar Stöckl

THE COMBINED-TARGET APPROACH - A WAY OUT OF THE PROFICIENCY TESTING DILEMMA

Dietmar StöcklLinda Thienpont

A1 Journal Article in ARCHIVES OF PATHOLOGY & LABORATORY MEDICINE

The Combined Target Approach - A Way Out of the Proficiency Testing Dilemma (Letter)

Dietmar StöcklLinda Thienpont

A2 Journal Article in Arch. Pathol. Labor. Med., 118, 8

Use of cyclodextrins for prepurification of progesterone and testosterone from human serum prior to determination with isotope dilution gas chromatography/mass spectrometry

Linda ThienpontVeronique De BrabandereDietmar StöcklAndreas De Leenheer

A1 Journal Article in ANALYTICAL CHEMISTRY

1993

Candidate reference methods for determining target values for cholesterol, creatinine, uric acid, and glucose in external quality assessment and internal accuracy control : II. Method transfer

Linda ThienpontAndreas De LeenheerDietmar StöcklH REINAUER

A1 Journal Article in CLINICAL CHEMISTRY

1992

Applications of isotope dilution‐mass spectrometry in clinical chemistry, pharmacokinetics, and toxicology

Andreas De LeenheerLinda Thienpont

A1 Journal Article in MASS SPECTROMETRY REVIEWS

Assessment of the accuracy of routine assays for the determination of steroid hormones and thyroxine in serum against isotope dilution-mass spectrometry target values

Dietmar StöcklH ReinauerLinda ThienpontAndreas De Leenheer

A2 Journal Article in COMMUNICATIONS IN LABORATORY MEDICINE

Assessment of the accuracy of routine assays for the determination of steroid hormones in serum by comparison with isotope dilution-gas chromatography-mass spectrometry (ID-GCMS) target values

Dietmar StöcklH ReinauerLinda ThienpontAndreas De Leenheer

Isotope Dilution - Gas Chromatography - Mass Spectrometry (ID - GCMS) as Reference Methodology for the Determination of Steroid Hormones in Serum

Linda ThienpontAndreas De LeenheerDietmar StöcklH REINAUER

Methodological aspects of isotope dilution-mass spectrometry used as a basis of accuracy assessment in clinical chemistry

Linda ThienpontAndreas De Leenheer

Quantitative Biomédical Mass Spectrometry

Andreas De LeenheerLinda Thienpont

Quantitative biomedical mass spectrometry

Andreas De LeenheerLinda Thienpont

A1 Journal Article in INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES

Quantitative mass spectrometry

Andreas De LeenheerLinda Thienpont

Bookchapter in Advances in Mass Spectrometry

The additional certification of magnesium (II) and lithium (I) in the lyophilized serum materials CRM 303 and CRM 304

Linda ThienpontAndreas De LeenheerE COLINETC DIRSCHERL

1991

Determination of aldosterone in human serum by isotope dilution gas chromatography/mass spectrometry using a new heptafluorobutyryl derivative

Dietmar StöcklHans ReinauerLinda ThienpontAndreas De Leenheer

A1 Journal Article in BIOLOGICAL MASS SPECTROMETRY

Development, validation, and certification by isotope dilution gas chromatography-mass spectrometry of lyophilized human serum reference materials for cortisol (CRM 192 and 193) and progesterone (CRM 347 and 348)

Linda ThienpontL SiekmannA LawsonE ColinetAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

Guest editorial to the papers presented at the 8th International Symposium of Mass Spectrometry in Life Sciences

Linda ThienpontAndreas De Leenheer

1990

Communication of the association of diagnostics and diagnostic instruments manufacturers : letter to the editor

Linda ThienpontAndreas De Leenheer

A1 Journal Article in LABORATORY MEDICINE

Liquid chromatographic determination of 2-thioxothiazolidine-4-carboxylic acid isolated from urine by affinity chromatography on organomercurial agarose gel

Linda ThienpontGC DepourcqHans NelisAndreas De Leenheer

A1 Journal Article in ANALYTICAL CHEMISTRY

1989

Determination of pipecolic acid in serum or plasma by solid-phase extraction and isotope dilution mass spectrometry

Jan Van BocxlaerBJ VerhaegheAE WautersWD De MarezLinda ThienpontAndreas De Leenheer

A1 Journal Article in BIOMEDICAL AND ENVIRONMENTAL MASS SPECTROMETRY

PROCEEDINGS OF THE 7TH INTERNATIONAL-SYMPOSIUM ON MASS-SPECTROMETRY IN LIFE SCIENCES, GHENT, BELGIUM, 1988

Linda ThienpontAndreas De Leenheer

Editorial material

Referentiemethoden op basis van isotoop dilutie - gaschromatografie - massaspectrometrie voor progesteron, 17ß-oestradiol en thyroxine : toepassing voor certificatie van serum referentiematerialen voor progesteron

Linda ThienpontAndré De Leenheer

The certification of progesterone in two lyophilized serum materials CRM 347 and CRM 348 : reference materials report

Linda ThienpontAndreas De LeenheerL SiekmannES Colinet

1988

APPLICATIONS OF MASS-SPECTROMETRY IN BIOANALYSIS

Linda Thienpont

Editorial material

Estradiol-17-beta quantified in serum by isotope dilution-gas chromatography mass-spectrometry : reversed-phase C18 high-performance liquid chromatography compared with immuno-affinity chromatography for sample pretreatment

Linda ThienpontPG VerhaegheKA Van BrusselAndreas De Leenheer

A1 Journal Article in CLINICAL CHEMISTRY

1987

A modified statistical approach for the detection of outlying values in external quality-control : comparison with other techniques

Linda ThienpontHerman SteyaertAndreas De Leenheer

A1 Journal Article in CLINICA CHIMICA ACTA

Measurement of tulobuterol in human plasma by capillary gas chromatography and selected ion monitoring detection

Linda ThienpontPG VerhaegheAndreas De Leenheer

A1 Journal Article in BIOMEDICAL AND ENVIRONMENTAL MASS SPECTROMETRY

1986

Bioanalytical mass-spectrometry as applied to organic-acid profiling and steroid reference methodology

Andreas De LeenheerM LefevereLinda Thienpont

A1 Journal Article in JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS

Profiel van de laboratoria voor Medische Biochemie en voor Klinische Analyse

Linda ThienpontHans NelisWilly LambertMF LefevereRM BauwensAndreas De Leenheer

1985

A MODIFIED STATISTICAL-METHOD FOR THE DETECTION OF OUTLYING VALUES IN EXTERNAL QUALITY-CONTROL - COMPARISON WITH OTHER TECHNIQUES

Linda ThienpontAndreas De LeenheerHC STEYAERT

1984

External quality assessment of laboratory performance in haematology in Belgium : analysis of two and a half years' experience

Andreas De LeenheerLinda Thienpont

A1 Journal Article in CLINICA CHIMICA ACTA

1983

External quality-control of clinical-chemistry laboratories in Belgium

Andreas De LeenheerHerman SteyaertLinda ThienpontJA Jonckheere

A1 Journal Article in CLINICA CHIMICA ACTA

STATISTICAL-METHOD COMPARISON APPROACH FROM EXTERNAL QUALITY-CONTROL DATA

Linda ThienpontAndreas De LeenheerHC STEYAERT

1980

Selected ion monitoring assay for bromhexine in biological-fluids

JAA JonckheereLinda ThienpontAndreas De LeenheerPatrick De BackerMichel DebackereFrans Belpaire

A1 Journal Article in BIOMEDICAL MASS SPECTROMETRY