Table 3.

Stability of Koumine (KM) in rat plasma under different conditions (n = 3).

Spiked Concentration (ng·ml−1)	3 Freeze-thaw cycles	Short-term storage	Long-term storage	Post-preparative
	RE (%)	RE (%)	RE (%)	RE (%)
0.2	−4.2	1.3	3.3	−1.6
0.6	3.3	−1.7	11.0	0.4
10	−11.7	−13.7	−5.8	9.6
150	−9.6	−9.3	−6.0	−4.5
IS	−3.1	1.9	−11.7	5.4