CPT® Code 84446

The CPT® Code 84446 refers to a laboratory test that measures the levels of tocopherol alpha, commonly known as Vitamin E, in the blood. Tocopherol alpha is the most bioavailable form of Vitamin E, meaning it is the variant that is most efficiently absorbed and utilized by the body's cells and tissues. This test is crucial for assessing Vitamin E status, as both elevated and decreased levels can have significant health implications. Elevated tocopherol alpha levels may lead to anticoagulant effects, which can increase the risk of bleeding disorders, while decreased levels can result in neuromuscular problems, affecting muscle function and coordination. The test is performed by obtaining a blood sample through a procedure known as venipuncture, which is separately reportable. The analysis of the serum or plasma is conducted using a method called quantitative high-performance liquid chromatography, a precise technique that allows for accurate measurement of Vitamin E levels in the blood.