Tehran University of Medical Sciences Iranian Journal of Microbiology 2008-3289 5 3 2013 09 15 259 262 EN Siavosh Salmanzadeh-Ahrabi Department of Biological Sciences, Alzahra University, Tehran, Iran. Tanıl Kocagöz Department of Medical Microbiology, Acibadem University, School of Medicine, Istanbul, Turkey. 2015 10 16 Background and Objective: Early determination of antibacterial susceptibility increases the success of therapy, decreases unnecessary use of antibacterial agents and side-effects, and lowers the overall healthcare cost. Materials and Methods: A rapid colorimetric method for antibacterial susceptibility testing named Qui-Sensitest (Inovative Biotechnology Organization, Istanbul, Turkey) was evaluated in this study. Results: Qui-Sensitest proved to be a reliable rapid test for determining antibacterial susceptibility having an overall agreement of 97.6% with Kirby Bauer disk diffusion test results for enteric bacteria with 0.4% of major discrepancies and 2.0% of minor discrepancy. Conclusion: Since the test makes the results available in 3.5-6 hours, it can provide the means for choosing the right treatment regimen the same day the infectious agent is isolated. https://ijm.tums.ac.ir/index.php/ijm/article/view/579 https://ijm.tums.ac.ir/index.php/ijm/article/download/579/353