Cell-based assays assume a crucial role in a string of research across biomanufacturing and drug discovery. As the pharmaceutical industry continues to tackle the challenge of a high attrition rate in drug development (due to toxicity), the role of a cell-based assay can’t be stressed enough. A typical cell-based assay takes into consideration live cells, in vitro to be used as a model system for the assessment of physiology and biochemistry of healthy as well as diseased cells. In essence, they offer a quantitative analysis regarding the presence and functioning of a specific cell tissue that is of interest. Cell-based assays have gained widespread adaptability as a reproducible and on-budget tool to aid multiple medical studies. They are widely used in the shape of standardized as well as custom-made solutions for multiple applications, like 3D cell culture, pre-clinical trials, pluripotent stem cell study, promoting compound efficiency, and toxicity screening. This post explores more on cell-based assays, the commonly used types, and their ever-increasing significance in today’s medical world.