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Recovery of biogenic amines from dietary supplement negative control (high level)
| Compound | Amount added, μg | Amount recovered, μg | Recovery, % | RSDa, % |
|---|---|---|---|---|
| Octopamine | 3946 | 3903 | 98.9 | 0.554 |
| Synephrine | 5080 | 4991 | 98.3 | 0.439 |
| Phenylephrine | 4802 | 4664 | 97.1 | 0.349 |
| Tyramine | 4628 | 4438 | 95.9 | 0.298 |
| N-methyltyramine | 751.2 | 737.7 | 98.2 | 0.441 |
| Hordenine | 3737 | 3703 | 99.1 | 0.387 |
RSD = Relative standard deviation; estimated from triplicate determinations.
