Publications by authors named "Marc Thelen"

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Response to the editorial by Karl Lackner.
Marith van Schrojenstein Lantman, Marc Thelen

Clin Chem Lab Med· November 2025

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Regulating the future of laboratory medicine: European regulatory landscape of AI-driven medical device software in laboratory medicine.
Hikmet Can Çubukçu, Guilaine Boursier, Solveig Linko, Francisco A Bernabeu-Andreu, Pika Meško Brguljan, Marc Thelen

Clin Chem Lab Med· September 2025

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IFCC recommendations for internal quality control practice: a missed opportunity.
Hikmet Can Çubukçu, Marc Thelen, Mario Plebani, Mauro Panteghini

Clin Chem Lab Med· August 2025

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Two-sample fecal immunochemical testing as a tool to avert colonoscopy in symptomatic patients: a prospective multicenter cohort study.
Sarah Moen, Pieter H A Wisse, Fleur Marijnissen, Hannah Raab, Iris Lansdorp-Vogelaar, Marc Thelen

Endoscopy· August 2025

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A proof-of-concept practical approach for achieving equivalent results from non-harmonized measurement methods while awaiting harmonization: The CA 125 example.
Hikmet Can Çubukçu, Oğuzhan Zengi, Hamit Hakan Alp, Murat Cihan, Kamil Taha Uçar, Marc Thelen

Clin Chim Acta· July 2025

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EN ISO 15189 revision: EFLM Committee Accreditation and ISO/CEN standards (C: A/ISO) analysis and general remarks on the changes.
Solveig Linko, Guilaine Boursier, Francisco A Bernabeu-Andreu, Nana Dzneladze, Florent Vanstapel, Marc Thelen

Clin Chem Lab Med· May 2025

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Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part III – EQA samples.
Christoph Buchta, Rachel Marrington, Barbara De la Salle, Stéphanie Albarède, Xavier Albe, Marc Thelen

Clin Chem Lab Med· April 2025

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Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part V – Benefits for stakeholders other than participants.
Christoph Buchta, Barbara De la Salle, Rachel Marrington, Andrés Aburto Almonacid, Stéphanie Albarède, Marc Thelen

Clin Chem Lab Med· April 2025

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Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part II – EQA cycles.
Christoph Buchta, Rachel Marrington, Barbara De la Salle, Stéphanie Albarède, Tony Badrick, Marc Thelen

Clin Chem Lab Med· April 2025

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Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part I – EQA in general and EQA programs in particular.
Christoph Buchta, Rachel Marrington, Barbara De la Salle, Stéphanie Albarède, Tony Badrick, Marc Thelen

Clin Chem Lab Med· April 2025

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Behind the scenes of EQA–characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part IV – Benefits for participant laboratories.
Christoph Buchta, Barbara De la Salle, Rachel Marrington, Stéphanie Albarède, Tony Badrick, Marc Thelen

Clin Chem Lab Med· April 2025

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Comments to the International Council for Standardization in Hematology Guidance for New Lot Verification of Coagulation Reagents, Calibrators, and Controls.
Marc H M Thelen, Marith van Schrojenstein Lantman, Anne Stavelin, Tze Ping Loh

Semin Thromb Hemost· April 2025

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Clinical Decision-Making Suffers from Inequivalent Measurement Results and Inadequate Reference Intervals.
Marith van Schrojenstein Lantman, Miranda van Berkel, Philip Kuijper, Marloes Langelaan, Nannette Brouwer, Marc Thelen

Clin Chem· November 2024

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Equivalence in clinical assessment of iron status requires ferritin assay standardisation before harmonisation of ferritin reference intervals.
Dorine W Swinkels, Marith van Schrojenstein Lantman, Hanke L Matlung, Cas Weykamp, Marc Thelen

Lancet Haematol· October 2024

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External quality assessment-based tumor marker harmonization simulation; insights in achievable harmonization for CA 15-3 and CEA.
Huub H Van Rossum, Stefan Holdenrieder, Yeo-Min Yun, Dina Patel, Marc Thelen

Clin Chem Lab Med· September 2024

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Allergy: Evaluation of 16 years (2007-2022) results of the shared external quality assessment program in Belgium, Finland, Portugal and The Netherlands.
Michiel Heron, Marco W J Schreurs, Inez-Anne Haagen, Bernard China, Ana Paula Faria, Marc Thelen

Clin Chem Lab Med· August 2024

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When bias becomes part of imprecision: how to use analytical performance specifications to determine acceptability of lot-lot variation and other sources of possibly unacceptable bias.
Marc H M Thelen, Marith van Schrojenstein Lantman

Clin Chem Lab Med· July 2024

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Modelling the impact of bias in fecal immunochemical testing on long-term outcomes of colorectal cancer screening.
Lucie de Jonge, Esther Toes-Zoutendijk, Brechtje D M Koopmann, Marith van Schrojenstein Lantman, Brenda Franken-van Vorsselen, Marc Thelen

Clin Chim Acta· July 2024

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Analytical performance specifications for trace elements in biological fluids derived from six countries federated external quality assessment schemes over 10 years.
Josiane Arnaud, Cas Weykamp, Ross Wenzel, Marina Patriarca, Montserrat González-Estecha, Marc Thelen

Clin Chem Lab Med· July 2024

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EFLM Working Group Accreditation and ISO/CEN standards on dealing with ISO 15189 demands for retention of documents and examination objects.
Pika Meško Brguljan, Marc H M Thelen, Francisco A Bernabeu-Andreu, Christos Kroupis, Guilaine Boursier

Adv Lab Med· June 2024

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[Not Available].
Pika Meško Brguljan, Marc H M Thelen, Francisco A Bernabeu-Andreu, Christos Kroupis, Guilaine Boursier

Adv Lab Med· June 2024

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To rule-in, or not to falsely rule-out, that is the question: evaluation of hs-cTnT EQA performance in light of the ESC-2020 guideline.
Marith van Schrojenstein Lantman, Remco Grobben, Antonius E van Herwaarden, Miranda van Berkel, Jeroen Schaap, Marc Thelen

Clin Chem Lab Med· May 2024

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Investigating the Current Harmonization Status of Tumor Markers Using Global External Quality Assessment Programs: A Feasibility Study.
Huub H van Rossum, Stefan Holdenrieder, Bart E P B Ballieux, Tony C Badrick, Yeo-Min Yun, Marc Thelen

Clin Chem· April 2024

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Abnormal Iron Status and Adverse Outcome After Elective Cardiac Surgery: A Prospective, Observational Multicenter Study.
Yannick J J M Hazen, Peter G Noordzij, Guillaume S C Geuzebroek, Jeroen Koets, Tim Somers, Marc H M Thelen

J Cardiothorac Vasc Anesth· March 2024

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Cost-effectiveness of home-based screening of the general population for albuminuria to prevent progression of cardiovascular and kidney disease.
Xavier G L V Pouwels, Dominique van Mil, Lyanne M Kieneker, Cornelis Boersma, Ronald W van Etten, Marc H M Thelen

EClinicalMedicine· February 2024

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