Table 4.

Short-term stability expressed in percent mean recovery and percent relative standard deviation for GEM and BET

Days	Formulation concentration (mg/mL)	GEM			BET
		Mean (%)	SD	%RSD	Mean (%)	SD	%RSD
0	5	100.485	0.034	0.486	100.241	0.048	0.923
	10	99.946	0.028	0.327	99.378	0.013	0.188
7	5	100.587	0.032	0.419	99.685	0.026	0.304
	10	100.254	0.052	0.983	100.403	0.024	0.259
15	5	99.442	0.022	0.217	99.821	0.391	0.745
	10	101.221	0.011	0.127	98.927	0.017	0.191
30	5	99.218	0.031	0.392	98.373	0.053	1.043
	10	98.487	0.049	0.941	98.248	0.068	1.439
Average		99.955	0.032	0.487	99.385	0.08	0.637