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pro vyhledávání: '"Hedwig C M, Stepman"'
Autor:
Hedwig C M, Stepman, Ulla, Tiikkainen, Dietmar, Stöckl, Hubert W, Vesper, Selvin H, Edwards, Harri, Laitinen, Jonna, Pelanti, Linda M, Thienpont, Marzena, Modzelewska
Publikováno v:
Clinical Chemistry. 60:855-863
BACKGROUNDExternal quality assessment (EQA) with commutable samples is essential for assessing the quality of assays performed by laboratories, particularly when the emphasis is on their standardization status and interchangeability of results.METHOD
Publikováno v:
Clinical chemistry and laboratory medicine. 49(2)
Since the introduction of liquid chromatography-mass spectrometry (LC/MS) for assessing vitamin D status, it has been shown that the C-3 epimer can account for a significant proportion of circulating 25-hydroxyvitamin D₃ (25OHD₃) concentrations i