Table 2.

Accuracy of the method.

Amount taken (µg/mL)	Amount added		Amount recovered (mean ± SD) (n = 6)	% recovery (mean ± SD)	RSD
	%	µg/mL
20	25	5	25.09 ± 0.10	100.37 ± 0.40	0.40
20	50	10	30.06 ± 0.09	100.19 ± 0.31	0.31
20	80	16	36.15 ± 0.21	100.42 ± 0.59	0.59
20	100	20	40.14 ± 0.13	100.34 ± 0.33	0.33
20	120	24	44.07 ± 0.06	100.15 ± 0.13	0.13