Cytotoxicity tests are used to evaluate the harmful effects of substances on cells. Common methods include MTT, LDH release and apoptosis detection, etc. To evaluate toxicity by measuring parameters such as cell survival, membrane integrity and cell death. These tests are widely used in drug screening, chemical safety assessment, and environmental toxicology studies. Cytotoxicity tests can provide important information for understanding the potential harm of substances to organisms and help develop safety standards and protective measures.