Used in biomedical research to quantify lactate dehydrogenase (LDH) levels in cell culture supernatants, serum, plasma, and other biological fluids. Helps assess cell cytotoxicity and cytolysis, particularly in drug development and toxicity studies. Widely applied in apoptosis research, where LDH release serves as a marker for membrane integrity loss. Enables high-throughput screening in immunology, oncology, and infectious disease studies. Supports evaluation of immune responses and therapeutic efficacy by measuring cellular damage.