Table 3 Results of recovery studies with pure drug pregabalin by standard addition method
From: A novel method for spectrophotometric determination of pregabalin in pure form and in capsules
Initial Conc. (mg/mL) | Volume (mL) | Amount added (μg) | Amount recovered (μg) | Recovery (%) ± SDa | RSD (%) |
|---|---|---|---|---|---|
0.2 | 5.0 | 100.0 | 98.7 | 98.70 ± 0.890 | 0.91 |
0.4 | 5.0 | 100.0 | 96.5 | 96.50 ± 0.923 | 0.95 |
0.6 | 5.0 | 100.0 | 99.7 | 99.70 ± 0.624 | 0.63 |
0.8 | 5.0 | 100.0 | 100.3 | 100.3 ± 1.600 | 1.57 |
1.0 | 5.0 | 100.0 | 98.1 | 98.10 ± 1.718 | 1.72 |