Soybean Milk Inhibits Absorption and Intestinal Transmembrane Transport of Gegen in Rats

Table 7

Summary of stability of puerarin for the UHPLC-MS/MS method in Ussing chamber samples (n = 6).

		Spiked conc. (ng·mL^−1) of puerarin
		20	1000	2500
3 freeze-thaw cycles	Precision (RSD%)	8.36	3.33	9.20
	Accuracy (RE%)	2.39	7.20	0.09
Prepreparation; (24 h, 4°C)	Precision (RSD%)	5.80	5.21	6.14
	Accuracy (RE%)	−4.25	7.00	−6.40
Postpreparation; (12 h, 20°C)	Precision (RSD%)	6.66	8.32	1.25
	Accuracy (RE%)	−2.38	−5.38	−6.1
Prepreparation; (12 h, 20°C)	Precision (RSD%)	7.23	2.13	−2.32
	Accuracy (RE%)	4.29	3.19	−1.73