Intra-assay and inter-assay precision and accuracy for determination of DUV in spiked human plasma.

Nominal DUV (ng mL−1)	Mean DUV (ng mL−1)	Recovery (%)	RSD (%)
Intra-day
5	4.76	95.12	1.15
15	15.33	102.21	2.15
150	146.19	97.46	0.70
400	398.37	99.59	0.24
Inter-day
5	4.75	94.95	2.69
15	15.13	100.88	1.21
150	146.47	97.64	1.38
400	398.23	99.56	0.75