Effect of Short-Course Oral Ciprofloxacin on Isoflavone Pharmacokinetics following Soy Milk Ingestion in Healthy Postmenopausal Women

Table 1

Extraction recovery of daidzein and genistein in human plasma (n=5).

Compound	Concentration; (ng/mL)	Peak height (mAU)		%Recovery
		In mobile phase	In plasma
		(mean±SD)	(mean±SD)
Daidzein	110	1573±11.39	1327±43.33	84.38
	1100	14531±95.16	12371±233.50	85.14
	2200	27001±498.58	24130±1453.77	89.36
Average recovery				86.29
Genistein	110	2176±49.60	1962±137.96	90.17
	1100	19789±131.30	16789±287.45	84.84
	2200	34279±634.20	31042±1910.87	90.56
Average recovery				88.52