The trueness and precision of all drugs (n = 5).
| Analyte | Nominal Conc. (ng mL−1) | Intra-day | Inter-day | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Conc. found (ng mL−1) | Trueness (%) | RSD (%) | Conc. found (ng mL−1) | Trueness (%) | RSD (%) | ||||
| Mean | SD | Mean | SD | ||||||
| 1 | 40 | 41.8 | 1.1 | 104.6 | 2.5 | 41.9 | 3.8 | 104.7 | 9.1 |
| 160 | 174.4 | 8.2 | 109.0 | 4.7 | 149.1 | 27.5 | 93.2 | 8.4 | |
| 1280 | 1298.8 | 47.6 | 101.5 | 3.7 | 1215.9 | 113.4 | 95.0 | 9.3 | |
| 2 | 40 | 41.6 | 2.7 | 104.0 | 6.6 | 39.5 | 2.9 | 98.8 | 7.4 |
| 160 | 176.5 | 9.0 | 110.3 | 5.1 | 171.6 | 15.9 | 107.3 | 9.3 | |
| 1280 | 1398.5 | 23.7 | 109.3 | 1.7 | 1417.7 | 58.2 | 110.8 | 4.1 | |
| 3 | 40 | 44.5 | 1.1 | 111.3 | 2.5 | 42.3 | 2.5 | 105.9 | 5.9 |
| 160 | 175.4 | 8.6 | 109.7 | 4.9 | 172.7 | 15.6 | 107.9 | 9.0 | |
| 1280 | 1302.4 | 21.0 | 101.8 | 1.6 | 1379.3 | 106.8 | 107.8 | 7.7 | |
| 4 | 40 | 42.7 | 1.2 | 106.9 | 2.9 | 40.6 | 1.4 | 101.6 | 5.9 |
| 160 | 164.9 | 7.5 | 103.1 | 4.5 | 167.2 | 14.8 | 104.5 | 8.8 | |
| 1280 | 1286.8 | 22.0 | 100.5 | 1.7 | 1376.6 | 121.8 | 107.5 | 8.8 | |
| 5 | 40 | 42.9 | 1.0 | 107.2 | 2.4 | 41.4 | 1.8 | 103.4 | 4.3 |
| 160 | 162.4 | 9.2 | 101.5 | 5.7 | 165.1 | 15.1 | 103.2 | 9.1 | |
| 1280 | 1288.7 | 19.3 | 100.7 | 1.5 | 1373.5 | 116.3 | 107.3 | 8.5 | |
| 6 | 40 | 43.1 | 1.4 | 107.7 | 3.2 | 41.1 | 2.5 | 102.6 | 6.0 |
| 160 | 156.4 | 7.3 | 97.8 | 4.6 | 163.4 | 16.8 | 102.1 | 10.3 | |
| 1280 | 1229.8 | 36.4 | 96.1 | 3.0 | 1343.1 | 146.3 | 104.9 | 10.9 | |
| 7 | 40 | 44.1 | 2.1 | 110.2 | 4.6 | 42.7 | 2.0 | 106.7 | 4.7 |
| 160 | 161.7 | 7.2 | 101.1 | 4.5 | 166.6 | 15.6 | 104.2 | 9.4 | |
| 1280 | 1290.1 | 20.1 | 100.8 | 1.6 | 1378.7 | 118.9 | 107.7 | 8.6 | |
| 8 | 40 | 40.3 | 3.5 | 100.7 | 8.6 | 43.2 | 3.9 | 108.0 | 9.0 |
| 160 | 155.9 | 6.6 | 97.5 | 4.3 | 158.6 | 15.4 | 99.2 | 9.7 | |
| 1280 | 1257.7 | 17.8 | 98.3 | 1.4 | 1342.0 | 122.1 | 104.8 | 9.1 | |
| 9 | 40 | 42.4 | 6.7 | 106.0 | 15.9 | 41.8 | 4.6 | 104.4 | 10.9 |
| 160 | 162.1 | 4.7 | 101.3 | 2.9 | 166.3 | 14.6 | 103.9 | 8.8 | |
| 1280 | 1284.1 | 33.1 | 100.3 | 2.6 | 1382.9 | 135.2 | 108.0 | 9.8 | |
| 10 | 40 | 36.0 | 4.3 | 90.0 | 13.2 | 35.4 | 5.4 | 88.4 | 11.3 |
| 160 | 170.6 | 9.7 | 106.6 | 5.7 | 165.7 | 17.2 | 103.6 | 10.4 | |
| 1280 | 1411.6 | 69.5 | 110.2 | 4.6 | 1460.5 | 100.7 | 114.1 | 6.9 | |