Development and Validation of HPTLC Method for Estimation of Carbamazepine in Formulations and Its In Vitro Release Study

Table 4

Repeatability studies (𝑛=7).

Parameters	Amount of drug detected (ng, mean ± SD)
Amount of Carbamazepine spotted (ng)	100	300	600
Measurement of peak area^a	98.44 ± 3.05	297.8 ± 3.7	596.49 ± 5.03
%RSD	1.28	3.32	3.06
Sample application and derivatization technique^b	96.9 ± 3.03	300.11 ± 1.6	597.17 ± 3.6
%RSD	1.8	2.34	1.9

^aOne spot is scanned eight times.
^bEight spots scanned once.