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Extraction recovery of tetramethylpyrazine, ferulic acid, nodakenin, and isoimperatorin in rabbit plasma (n = 6).
| Component | Concentration (ng/ml) | Recovery rate (%) | Concentration (ng/ml) | Recovery rate (%) | Concentration (ng/ml) | Recovery rate (%) |
|---|---|---|---|---|---|---|
| Tetramethylpyrazine | 2788.000 | 102.20 | 1394.000 | 113.98 | 13.940 | 88.92 |
| Ferulic acid | 3865.000 | 95.84 | 1932.500 | 95.41 | 19.325 | 104.58 |
| Nodakenin | 1027.500 | 94.51 | 318.525 | 87.56 | 3.185 | 85.34 |
| Isoimperatorin | 1328.000 | 87.27 | 46.480 | 85.99 | 23.240 | 85.34 |
