Table 2 Recovery, detection limits, and quality assurance for isoflavones and lignan polyphenols in human urine samples
From: Levels of urinary isoflavones and lignan polyphenols in Japanese women
Compound | Quantification (confirmation value) | Recovery (%) and (reproducibility, RSD %) (n = 10) | Instrument detection limita (pg) | Method detection limitb (ng/mL) |
|---|---|---|---|---|
Equol | 386 (371) | 103.2 (9.4) | 60 | 20 |
Daidzein | 398 (383) | 98.9 (7.3) | 100 | 28 |
Enterodiol | 410 (500) | 94.7 (9.2) | 2 | 0.6 |
Enterolactone | 442 (263) | 97.3 (10.0) | 10 | 3 |
D6-daidzein | 404 (389) | – | – | – |