Abstract
Ceftazidime pentahydrate (CEF) and Vancomycin hydrochloride (VAN) are antimicrobial drugs they are used worldwide especially in developing countries for management several diseases caused by bacterial infections especially against Pseudomonas species. From this point, ultrasensitive, simple, rapid, cost effective method was developed for assay of CEF and VAN in real human plasma. The proposed spectrofluorimetric method was achieved using fluorescamine reagent. This method based on reaction of fluorescamine reagent with primary amine moiety (aromatic and aliphatic) in CEF and VAN respectively, with calibration graph from 30 to 300 ng mL−1 and 0.5–30 ng mL−1 was plotted under optimum conditions. The investigated method was developed and bio-analytically validated using ICH and US-FDA recommendations. The proposed method was successfully used for determination of the cited drugs in real human plasma with high percentage of recovery ranged from 95.72 ± 0.95% to 97.72 ± 2.02 and pharmaceutical formulations with percentage 101.55 ± 0.55% and 101.99 ± 0.43% for CEF and VAN respectively. The study was also utilized to examine the stability of the CEF and VAN in real human plasma.