(a)
(b)
(c)
(d)
(e)
Figure 4: Typical MRM chromatograms of epimedin C (1) and IS (2). (a) Blank rat plasma; (b) blank plasma sample spiked with epimedin C at LLOQ and IS (66.7 ng/mL); (c) rat plasma sample at 15 min after intramuscular injection of epimedin C; (d) rat plasma sample at 15 min after intramuscular administration of combination solution of four flavonoid glycosides; (e) rat plasma sample at 15 min after intramuscular administration of CKZ.