Certification of Creatinine in a Human Serum Reference Material by GC-MS and LC-MS

Abstract

The certified concentration (expanded uncertainty) of SRM 967 was 66.5 (1.8) mumol/L for serum pool 1 (a value close to the diagnostically important concentration of 88.4 mumol/L) and 346.2 (7.4) mumol/L for serum pool 2 (a concentration corresponding to that expected in a patient with chronic kidney disease).