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Precision and Accuracy of the QC Samples in Human Serum and Urine (n = 5, Three Batches)
| Matrix | Concentration (ng/mL) | Intra-batch |
Inter-batch |
||
|---|---|---|---|---|---|
| RE (%) | RSD (%) | RE (%) | RSD (%) | ||
| Serum | 2.50 | −1.2 | 0.9 | NAa | NAa |
| 7.50 | 6.0 | 3.6 | 1.3 | 4.4 | |
| 750 | −5.1 | 1.3 | −0.8 | 3.9 | |
| 7,500 | 4.9 | 0.7 | 3.7 | 2.7 | |
| Urine | 500 | −1.2 | 2.7 | NAa | NAa |
| 1,500 | 6.7 | 5.2 | −0.7 | 6.4 | |
| 6,000 | 5.8 | 1.7 | −1.0 | 5.3 | |
| 40,000 | 6.0 | 1.6 | −0.5 | 5.3 | |
aThe LLOQ samples were analyzed in only one batch, RE and RSD of inter-batch were not applicable.
