Table 2 Intra-assay and inter-assay coefficients of variation of samples with high, medium or low cortisol concentrations
Sample concentration | Intra-assay CV | Inter-assay CV | ||||
|---|---|---|---|---|---|---|
Mean μg/dl | SD | CV % | Mean μg/dl | SD | CV % | |
High | 3.23 | 0.16 | 5.0 | 3.42 | 0.20 | 5.9 |
Medium | 2.25 | 0.04 | 1.8 | 1.96 | 0.29 | 14.8 |
Low | 0.55 | 0.01 | 1.8 | 0.48 | 0.06 | 13.0 |