CPT® Code 82261

The CPT® Code 82261 refers to a laboratory test specifically designed to screen for biotinidase deficiency. Biotinidase is an enzyme that plays a crucial role in the metabolism of biotin, a vitamin that is essential for the proper processing of fats, proteins, and carbohydrates within the body. This enzyme is predominantly found in the liver, kidneys, and blood serum, where it functions to cleave biotin from biocytin, allowing the body to recycle this vital nutrient. Biotinidase deficiency is an inherited genetic disorder that significantly impairs the body's ability to reuse biotin, leading to a range of health issues. Symptoms of this deficiency typically manifest in infancy or early childhood and may include seizures, muscle weakness, decreased muscle tone (hypotonia), developmental delays, and respiratory problems. To conduct this test, a blood sample is collected, which can be obtained through a venipuncture or heel stick, both of which are separately reportable procedures. The serum or plasma from the blood sample is then analyzed using spectrophotometry, a method that measures the amount of light absorbed by the sample. It is important that the patient sample is paired with a control sample taken from a normal, healthy individual who is not biologically related to the patient, ensuring the accuracy and reliability of the test results.