Quantification of Lansoprazole in Oral Suspension by Ultra-High-Performance Liquid Chromatography Hybrid Ion-Trap Time-of-Flight Mass Spectrometry

Table 2

Interday precision over four days (% relative standard deviation (% RSD)) and accuracy (% error) of the LC-MS/MS assay for quantification of lansoprazole (n = 20 for each concentration).

Concentration of lansoprazole added (μg/mL)	Concentration of lansoprazole found (μg/mL)	% Relative standard deviation	% Error
5	5.07 + 0.18	3.55	1.18
10	10.13 + 0.20	1.99	1.34
15	14.84 + 0.58	3.93	1.06
20	20.56 + 0.46	2.23	2.81
25	24.44 + 0.89	3.63	2.23