Table 3.

Recovery rate (%recovery) for each plasma sample in spike recovery tests.

	Treatment	Measured concentration (pg/mL)	CV (%)	Theoretical concentration of the spiked sample (pg/mL)	Recovery rate (%)
Sample 1	Neat (0 pg spike)	16.03	5.8
	1 pg spike	19.39	9.7	18.80	103.1
	5 pg spike	28.55	3.9	29.88	95.6
	10 pg spike	42.24	11.6	43.73	96.6
Sample 2	Neat (0 pg spike)	8.86	1.9
	1 pg spike	11.87	15.9	11.63	102.1
	5 pg spike	26.88	9.0	22.71	118.4
	10 pg spike	39.10	16.2	36.56	106.9

CV = coefficient of variation.