Cytotoxicity Detection Kit (LDH) Application The Cytotoxicity Detection Kit offers a fast, simple way to quantitate cytotoxicity/cytolysis. For example, it can be used to: Detect and quantify of cell-mediated cytotoxicity. Determine mediator-induced cytolysis. Determine the cytotoxic potential of compounds in environmental and medical research, as well as in the food, cosmetic, and pharmaceutical industries. Determine cell death in bioreactors. Note: The assay measures LDH activity released from damaged cells. It is performed in 96-well plates.