Study on Pharmacokinetic and Bioavailability of Tamarixetin after Intravenous and Oral Administration to Rats

Table 4

Stability of all analytes in rat plasma (n = 6).

Compounds	Spiked concentration (ng/mL)	Room temperature for 2 h		Three freeze-thaw		Autosampler for 6 h
		Measured (ng/mL)	RSD (%)	Measured (ng/mL)	RSD (%)	Measured (ng/mL)	RSD (%)
Tamarixetin	5	4.7 ± 0.3	6.4	4.9 ± 0.3	6.1	4.7 ± 0.4	8.5
	500	524.3 ± 35.8	6.8	519.3 ± 27.6	5.3	478.3 ± 10.1	2.1
	4000	4005.7 ± 435.5	10.9	3989.8 ± 259.9	6.5	3687.5 ± 41.9	1.1