 There has been a growing interest in researching and developing new antimicrobial agents to combat microbial resistance. Several bioassays such as disc diffusion, well diffusion and broth or agar dilution are well known and commonly used. Others such as flow cytoforometric and bioluminescent methods are not widely used because they require specified equipment and further evaluation. This article was authored by Mauner Belluri, Malaysadiki, and Saq Qarechi, Imsuda.