L-Lactate Dehydrogenase is widely used in clinical diagnostics to measure lactate levels in blood, which helps in assessing tissue oxygenation and diagnosing conditions like sepsis, heart failure, and shock. It is also employed in biotechnology for enzymatic assays and research studies focused on cellular metabolism, particularly in understanding anaerobic glycolysis. Additionally, it plays a role in the food industry for monitoring fermentation processes in dairy and beverage production.