Fig. 1. Intra-laboratory %CVs for insulin and C-peptide measurements. (A) Intra-laboratory %CVs of insulin measurements, showing a decreasing trend with increasing concentration of insulin (ANOVA: P=0.0059; 202111 vs. 202113 P=0.0255; 202111 vs. 202115 P=0.0063). (B) Intra-laboratory %CVs of C-peptide measurements, with no significant trend observed (ANOVA: P=0.702). The serum samples are shown in order of insulin and C-peptide concentration.

Ann Lab Med 2022;42:428~437 https://doi.org/10.3343/alm.2022.42.4.428