Research Article
High-Performance Liquid Chromatography Determination of Meloxicam and Piroxicam with Ultraviolet Detection
Table 2
Intra-assay accuracy, precision, and assay linearity for piroxicam in plasma.
| Intra-assay variability | Concentration added (ng/mL) | Concentration measured (ng/mL) (mean ± SD) | RSD (%) |
| 15 | 21 ± 0.41 | 2.0 | 750 | 774 ± 27 | 3.5 | 1250 | 1293 ± 44 | 3.4 | 3000 | 3006 ± 69 | 2.0 | 7500 | 7517 ± 399 | 5.0 |
| Assay linearity | | Mean ± S.D. | RSD (%) |
| -intercept | −0.0106 ± 0.0004 | 3.44 | Slope | 0.0012 ± 0.000018 | 1.51 | | 0.997 ± 0.003 | 0.28 |
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SD: standard deviation; : number of samples; RSD: relative standard deviation.
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