CPT® Code 82042

The CPT® Code 82042 refers to a laboratory test that quantifies the amount of albumin present in body fluids other than blood or urine. Albumin is a vital plasma protein that plays a crucial role in maintaining the colloidal osmotic pressure of blood, which is essential for proper fluid balance within the body. This protein has the ability to bind various substances, including water, electrolytes such as sodium, potassium, and calcium, as well as fatty acids, hormones, bilirubin, and certain medications. The measurement of albumin levels is significant in clinical practice as it provides valuable insights into a patient's nutritional status and renal function. To perform this test, a sample of the relevant body fluid is collected and analyzed using quantitative methods such as nephelometry or spectrophotometry, which allow for precise measurement of albumin concentration. This test is particularly useful in diagnosing and monitoring conditions that may affect albumin levels, thereby aiding in the overall assessment of a patient's health status.