QCL (25 ng/mL) (n = 5) | QCH (4556.3 ng/mL) (n = 5) | Patient samples (n = 7) | ||||
---|---|---|---|---|---|---|
CV% | Bias% | CV% | Bias% | CV% | Diff% | |
Autosampler, 48 h | 5.2 | 3.8 | 4.0 | − 2.5 | – | – |
Autosampler, 72 h | 7.8 | 13.7 | 4.3 | − 2.5 | – | – |
Room temp., 4 h | – | – | – | – | 4.1 | 5.0 |
Freeze-thaw, 4 cycles | – | – | – | – | 2.5 | − 0.2 |