Objective: To assess effects of storage time condition on results of urea, creatinine, triglyceride, cholesterol, HDL-cholesterol, LDL-cholesterol, aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma glutamyltransferase (GGT), acid uric, total bilirubin, direct bilirubin in whole blood and plasma samples.