Tab. 3.

Intraday and interday precision and accuracy data

Intraday precision and accuracy				Interday precision and accuracy
Nominal conc., (ng/mL)	Concentration measured	% RSD	Accuracy (%)	Concentration Measured	% RSD	Accuracy (%)
			Atorvastatin
6	6.41±0.5	8.12	105.11±4.1	6.30±0.6	9.67	106.86±6.3
18	18.42±1.3	7.05	102.34±3.5	18.63±1.4	7.29	103.51±7.3
60	60.78±6.3	6.26	101.30±4.2	63.64±5.3	8.36	106.08±3.9
250	255.21±16.8	6.58	102.08±3.3	267.35±20.4	7.63	106.94±6.1
			Pioglitazone
20	19.54±1.3	6.53	98.89±3.1	21.12±2.1	9.51	105.59±5.1
60	59.77±3.3	5.53	99.62±2.4	61.64±5.1	8.15	102.75±4.8
300	298.62±21.5	5.42	99.16±3.5	296.81±32.7	8.21	99.71±4.6
1500	1486.71±73.9	4.95	99.11±4.2	1579.73±129.2	8.18	105.32±3.9

^a Mean ± S.D, n=6.