Biotinidase Level, Serum analysis is a laboratory test aimed at measuring the activity of the biotinidase enzyme in the body. This enzyme is essential for converting biotin into its active form, contributing to many vital functions, including proper fat and carbohydrate metabolism. This test is especially recommended for newborns as part of metabolic screening, as it can detect biotinidase deficiency, which may lead to serious health problems if not identified early. The analysis helps guide appropriate treatments, such as biotin supplementation, thereby supporting improved overall health and nutrition.