Table 1.

Concentration data form validation.

Spiked plasma concentration (pg/ml)	Concentration measured (pg/ml) Mean ± Sd n = 5	Precision (% CV)	Accuracy %
50.00	49.92 ± 0.44	0.80	99.23
100.00	100.21 ± 1.91	1.90	98.14
500.00	502.73 ± 6.83	1.40	98.65
1000.00	1000.54 ± 11.53	1.10	98.92
5000.00	5005.06 ± 38.75	0.80	99.28
10000.00	9978.95 ± 160.56	1.60	98.45
20000.00	19871.04 ± 303.46	1.50	98.53
30000.00	29759.82 ± 508.47	1.70	98.37
40000.00	40310.88 ± 123.85	0.30	99.74
50000.00	50084.85 ± 266.72	0.50	99.55