Table 3.

Brine shrimp lethality bioassay of the various extracts of Gaultheria procumbens leaf

Test materials	Percent mortality at the concentration studied (μg/mL)									LC50 (μg/mL)
w/v	10	20	31.25	50	62.5	75	125	250	500
Aqueous extract	0	0	0	10	20	20	30	40	50	427.66
Ethanol extract	0	0	10	30	30	40	60	70	80	218.86
n-hexane extract	0	0	20	50	60	70	80	90	100	114.51
w/v	0.125	0.25	0.5	1	5	10
Vincristine sulfate*	20	30	40	50	90	100				2.16
v/v (%)	0.1	0.5	1	2.5
Dimethyl sulfoxide†	0	0	0	0						0

Values are presented as mean (SEM) of 3 independent experiments.

^⁎Positive control.

^†Negative control.