Chromatography Research International

Research Article

Quantification of Gymnemagenin and -Sitosterol in Marketed Herbal Formulation by Validated Normal Phase HPTLC Method

Table 2

Intra- and interday precision of the HPTLC method ( ).
Marker compoundConcentrationaIntra/interday
concentration obtaineda		% RSD
Gymnemagenin 200198.8/198.40.25/0.28
-Sitosterol300300.6/299.30.32/0.30
Concentration in ng bandāˆ’1; RSD is the relative standard deviation.