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Analytical quality specifications for reference methods and operating specifications for networks of reference laboratories. discussion paper from the members of the external quality assessment (EQA) Working Group B1) on target values in EQAS.
Thienpont L, Franzini C, Kratochvila J, Middle J, Ricós C, Siekmann L, Stöckl D. Thienpont L, et al. Among authors: siekmann l. Eur J Clin Chem Clin Biochem. 1995 Dec;33(12):949-57. Eur J Clin Chem Clin Biochem. 1995. PMID: 8845428 Review.
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.
Thienpont LM, Van Uytfanghe K, Marriott J, Stokes P, Siekmann L, Kessler A, Bunk D, Tai S. Thienpont LM, et al. Among authors: siekmann l. Clin Chem. 2005 Dec;51(12):2303-11. doi: 10.1373/clinchem.2005.058180. Epub 2005 Oct 13. Clin Chem. 2005. PMID: 16223886
IFCC primary reference procedures for the measurement of catalytic activity concentrations of enzymes at 37 degrees C.
International Federation of Clinical Chemistry and Laboratory Medicine (IFCC); Schumann G, Aoki R, Ferrero CA, Ehlers G, Férard G, Gella FJ, Jørgensen PJ, Kanno T, Kessner A, Klauke R, Kytzia HJ, Lessinger JM, Miller WG, Nagel R, Pauwels J, Schimmel H, Siekmann L, Weidemann G, Yoshida K, Ceriotti F. International Federation of Clinical Chemistry and Laboratory Medicine (IFCC), et al. Among authors: siekmann l. Clin Chem Lab Med. 2006;44(9):1146-55. doi: 10.1515/CCLM.2006.212. Clin Chem Lab Med. 2006. PMID: 16958612
IFCC primary reference procedures for the measurement of catalytic activity concentrations of enzymes at 37 degrees C. International Federation of Clinical Chemistry and Laboratory Medicine. Part 7. Certification of four reference materials for the determination of enzymatic activity of gamma-glutamyltransferase, lactate dehydrogenase, alanine aminotransferase and creatine kinase accord.
Siekmann L, Bonora R, Burtis CA, Ceriotti F, Clerc-Renaud P, Férard G, Ferrero CA, Forest JC, Franck PF, Gella FJ, Hoelzel W, Jørgensen PJ, Kanno T, Kessner A, Klauke R, Kristiansen N, Lessinger JM, Linsinger TP, Misaki H, Mueller MM, Panteghini M, Pauwels J, Schiele F, Schimmel HG, Vialle A, Weidemann G, Schumann G; International Federation of Clinical Chemistry and Laboratory Medicine. Siekmann L, et al. Clin Chem Lab Med. 2002 Jul;40(7):739-45. doi: 10.1515/CCLM.2002.127. Clin Chem Lab Med. 2002. PMID: 12241024
77 results