The new Roche Vitamin D Total assay: fit for its purpose?

Autor: Arjen-Kars Boer, Johannes M.W. van den Ouweland, Huib L. Vader, Judith M A Emmen, Jos P.M. Wielders

Publikováno v: Clinical Chemistry and Laboratory Medicine (CCLM). 50:1969-1972

Background: Measurement of serum 25-hydroxyvitamin D [25(OH)D] is used to assess vitamin D status. We evaluated the analytical performance of a new automated assay, Elecsys Vitamin D Total (Roche Diagnostics, Mannheim, Germany), based on competitive

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc32b180fc42a689f9cd8b068ee1bf5b
https://doi.org/10.1515/cclm-2011-0085

Do we measure bilirubin correctly anno 2005?

Autor: Volkher Scharnhorst, Fedde van der Graaf, Joke J. Apperloo, Huib L. Vader

Publikováno v: Clinical Chemistry and Laboratory Medicine, 43(5), 531-535. Walter de Gruyter GmbH

We observed 30% discrepancy between liquid chemistry and dry chemistry analysers for the determination of total bilirubin in human adult serum samples, which were consistent with a 20% overestimation and 10% underestimation relative to a Jendrassik-G

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad59c70b339e692ad75e56f8f637c0b2
https://doi.org/10.1515/cclm.2005.092

Interlaboratory comparison of the Doumas bilirubin reference method

Autor: Stanley F. Lo, Gerhard Schumann, Hans-Joachim Kytzia, F. Weber, Melanie Swartzentruber, Huib L. Vader, Basil T. Doumas

Publikováno v: Clinical Biochemistry. 42:1328-1330

Objectives To assess the performance of the Doumas bilirubin reference method. Design and methods Ring trails using pooled patient specimens, a calibrator and human sera enriched with unconjugated bilirubin were analyzed in five laboratories using th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a8ab86064641f66f1145779a87777e2
https://doi.org/10.1016/j.clinbiochem.2009.05.007

Accuracy of First and Second Generation Testosterone Assays and Improvement through Sample Extraction

Autor: Wouter M. Tiel Groenestege, Huib L. Vader, Marcel J.W. Janssen, Hong N. Bui, Paul P.C.A. Menheere, Joop ten Kate, Wytze P. Oosterhuis, Annemieke C. Heijboer

Publikováno v: Groenestege, W M T, Bui, H N, ten Kate, J, Menheere, P P C A, Oosterhuis, W P, Vader, H L, Heijboer, A C & Janssen, M J W 2012, ' Accuracy of First and Second Generation Testosterone Assays and Improvement through Sample Extraction ', Clinical Chemistry, vol. 58, no. 7, pp. 1154-1156 . https://doi.org/10.1373/clinchem.2011.181735
Clinical chemistry, 58(7), 1154-1156. American Association for Clinical Chemistry Inc.
Clinical Chemistry, 58(7), 1154-1156

To the Editor: The monitoring of antiandrogen treatment in patients with prostate cancer, investigation of hyperandrogenism in women, and evaluation of infants with ambiguous genitalia require accurate measurement of low testosterone concentrations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87d9238f0329bc2cf433b5031d052a0d
https://research.vumc.nl/en/publications/4030195e-5be8-42a1-af15-07516f687633

Collection of blood specimens by venipuncture for plasma-based coagulation assays: necessity of a discard tube

Autor: Maarten T M, Raijmakers, Carolien H F, Menting, Huib L, Vader, Fedde, van der Graaf

Publikováno v: American journal of clinical pathology. 133(2)

The Clinical and Laboratory Standards Institute (CLSI) recently abandoned its recommendation for drawing a discard tube when performing a prothrombin time (PT)/international normalized ratio (INR) or an activated partial thromboplastin time (APTT). B

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::48d80c0c7a5cc495550d107b7ee969bb
https://pubmed.ncbi.nlm.nih.gov/20959673