Cytotoxicity assay kits are designed to measure the loss of structural integrity or function that is associated with cell death. Many cytotoxicity assays operate by detecting compromised cell membranes. This is carried out with the use of membrane-impermeable dye or by detection of cellular components not usually found outside the cell, such as lactate dehydrogenase (LDH) or DNA. Cytotoxicity assays are useful for studying how cellular populations may be affected by various agents, such as drug candidates. Visit the supplier page for more product information.