Table 2.

Linearity of the five constituents.

Constituent	Regression equation	r	Linear range (μg/mL)	LOD (μg/mL)	LOQ (μg/mL)
Deoxyschizandrin	y = 16.774x + 22.536	0.998	11.6–72.3	0.07	0.18
γ-Schizandrin	y = 34.115x + 43.575	0.999	6.4–45.2	0.05	0.12
Loganin	y = 11.245x + 22.679	0.994	35.2–237.6	0.10	0.31
Paeoniflorin	y = 25.414x + 7.587	0.997	18.1–114.2	0.09	0.25
Paeonol	y = 44.574x + 22.364	0.996	32.2–215.3	0.04	0.11