Adulteration of the Herbal Weight Loss Products by the Illegal Addition of Synthetic Antiobesity Medications: A Pilot Study

Table 2

Linearity range, detection limits, and summary of method validation data for HPLC analyses.

Drug	Range (ng/mL)	Linear equation	r^2	LOD (ng/mL)	LOQ (ng/mL)	Recovery (%)	RSD (%)
Sibutramine	5–200	Y = 36358x + 123.12	0.999	1.17	3.56	101.36	2.67