Valerylcarnitine is primarily used in metabolic research to study fatty acid oxidation and energy metabolism. It plays a role in identifying and diagnosing metabolic disorders, particularly those related to carnitine deficiency or inborn errors of metabolism. Clinically, it is measured in blood or urine samples to assess mitochondrial function and detect abnormalities in the breakdown of fatty acids. Additionally, it is investigated in studies focusing on the impact of metabolic dysregulation in conditions like diabetes, obesity, and cardiovascular diseases. Its application extends to nutritional science, where it is examined for its potential role in optimizing energy production and metabolic health.