Table 2 Recoveries and relative standard deviations of HE in HPLC analysis for validation

Concentration (mg/mL)	Recovery (%)	Mean±SD1)	RSD (%)2)
1.50	100.5	101.8±1.674	0.019±0.010
	103.7
	101.3
1.00	102.4	104.7±2.536	0.018±0.012
	104.3
	107.4
0.50	98.0	98.8±0.865	0.003±0.002
	99.7
	98.7

Each values was the mean±SD.
Relative standard deviation.