Table 1.

Linear correlation parameters and LLOQs of each bioactive component in serum after oral administration of Xian-ling-gu-bao extracts.

Compounds	Slope	Intercept	Concentration range (ng/mL)	r2	LLOQ (ng/mL)
Sweroside	2.1 × 10−4	7.6 × 10−4	20–2000	0.9950	20
Magnoflorine	5.28 × 10−3	1.512 × 10−2	1–1500	0.9958	1
Epimedin C	4.86 × 10−3	−1.42 × 10−3	2–2000	0.9951	2
Akebia saponin VI	6.9 × 10−4	−4.1 × 10−4	20–2000	0.9951	20
Psoralen	5.3 × 10−4	2.66 × 10−3	5–3000	0.9950	5
Isopsoralen	3.8 × 10−4	3.01 × 10−3	5–1500	0.9918	5
Neobavaisoflavone	1.661 × 10−2	4.0 × 10−4	0.5–300	0.9951	0.5
Icariside II	2.827 × 10−2	−2.79 × 10−3	0.5–200	0.9936	0.5
Corylin	5.12 × 10−3	−0.3.0 × 10−5	1–100	0.9944	1
Psoralidin	7.35 × 10−3	3.57 × 10−3	1–500	0.9953	2
Bavachinin	7.44 × 10−3	3.28 × 10−3	1–100	0.9950	2