Development and Validation of Stability-Indicating RP-UPLC Method for the Determination of Methdilazine in Bulk Drug and in Pharmaceutical Dosage Form

Table 5

Results of precision study (𝑛=5).

Concentration injected, μg mL^−1	Intraday precision			Interday precision
	Mean area ± SD	% RSD^a	% RSD^b	Mean area ± SD	% RSD^a	% RSD^b
20.0	1456560 ± 6277	0.43	0.31	1430424 ± 6948	0.48	0.32
40.0	2976574 ± 11058	0.37	0.24	2912796 ± 11769	0.40	0.28
60.0	4380383 ± 6228	0.14	0.13	4319865 ± 6987	0.16	0.17

^aRelative standard deviation based on peak area.
^bRelative standard deviation based on retention time.