Dilution factor | Spike concentration (pg/mL) | Mean duplicate CV (%) | %recovery* (mean ± SD) (n = 3) |
---|---|---|---|
1:1 | 2,000,000 | 11.5 | 37.6 ± 4.3 |
1:10 | 200,000 | 5.7 | 105.0 ± 4.9 |
1:100 | 20,000 | 9.8 | 116.4 ± 12.1 |
1:1000 | 2000 | 14.9 | 123.1 ± 40.9 |
1:10,000 | 200 | 3.9 | 114.5 ± 0.5 |
1:100,000 | 20 | 13.9 | 90.5 ± 15.0 |
1:1,000,000 | 2 | 38.1 | 369.2 ± 136.2 |