Table 1.

Intra-day recovery, precision, and accuracy.

Desired (μg/mL)	Calculated (μg/mL)	Recovery (%)	Mean	SD	Precision (% CV)	Accuracy (% RE)
0.05	0.05	100.00
0.05	0.04	80.00
0.05	0.06	120.00
0.05	0.05	100.00
0.05	0.05	100.00
0.05	0.05	100.00	100.00	12.65	12.65	0.00
0.25	0.2	80.00
0.25	0.26	104.00
0.25	0.2	80.00
0.25	0.22	88.00
0.25	0.2	80.00
0.25	0.26	104.00	89.33	11.78	13.18	−12.00
5	4.14	82.80
5	4.12	82.40
5	5.13	102.60
5	4.22	84.40
5	5.08	101.60
5	3.82	76.40	88.37	10.98	12.43	−11.60
10	8.26	82.60
10	8.54	85.40
10	7.41	74.10
10	8.47	84.70
10	10.93	109.30
10	8.91	89.10	87.53	11.78	13.46	−12.5

% CV = (SD/calculated concentration) × 100; % RE = (calculated concentration − desired concentration)/(desired concentration × 100).