Table 2.

Recovery (n=5) of compound K in human blank plasma quality control samples at intra- and inter-day

Concentration (ng/mL)	Recovery (%)
	Intra-day	Inter-day
1	106.00±0.08	85.40±0.08
2	103.50±0.19	94.50±0.09
400	111.45±5.21	112.50±5.21
800	89.62±34.46	95.87±34.46

Each value is presented as mean±SD.

Recovery (%)=100×(amount found-amount contained)/amount added.