Analyte name QC sample Mean peak area ratio (%) Stability
Stability sample (%CV) Comparison sample (%CV)
9-cRA LQC 0.0458 (2.36) 0.0470 (5.23) 97.5
HQC 2.2126 (0.81) 2.2280 (1.92) 99.3
4-oxo-9-cRA LQC 0.05078 (4.81) 0.04918 (5.83) 103.3
HQC 1.28350 (2.32) 1.21385 (2.76) 105.7
Table 8: Whole blood stability (n=4).