Table 1.

Precision and accuracy of IPA in QC plasma (n = 3 days, five replicates per day).

Spiked concentration (ng/mL)	Intraday (ng/mL)	Interday (ng/mL)
10	9.33 ± 1.48	10.3 ± 1.46
400	412.5 ± 1.16	386.3 ± 1.94
2000	2112.4 ± 1.44	1960.7 ± 2.06