CPT® Code 81000

Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; non-automated, with microscopy

A urinalysis is a diagnostic procedure that involves the examination of urine to assess various health conditions. This specific test, identified by CPT® Code 81000, utilizes dip stick or tablet reagent methods to analyze multiple constituents in the urine, including bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, and urobilinogen. The procedure is categorized as non-automated and includes microscopy for a more detailed examination of the urine sample. The dip stick method employs a paper or plastic stick with color strips that react to the presence of specific substances in the urine. When the stick is immersed in the urine sample, the color changes on the strips are compared to a color chart to determine the presence or concentration of the tested agents. Alternatively, the tablet reagent method involves placing a few drops of urine on an absorbent mat, followed by the addition of a reagent tablet and distilled water, allowing for a color change that indicates the presence of certain substances. The analysis of these constituents can provide critical insights into various medical conditions that may not present immediate symptoms, such as diabetes mellitus, kidney disease, or urinary tract infections. For instance, the detection of bilirubin in urine can indicate liver dysfunction, while the presence of glucose may suggest diabetes. Hemoglobin detection can reveal issues such as hematuria or myoglobinuria, and the presence of ketones may indicate diabetic ketoacidosis or starvation. Additionally, the test assesses the pH level of urine, protein levels, and specific gravity, which can reflect kidney function and overall metabolic health. Following the initial dip stick or tablet testing, the urine sample is subjected to microscopic examination, where the sediment is analyzed for various cellular components, including crystals, casts, and blood cells. This comprehensive approach allows healthcare providers to diagnose and monitor a range of conditions effectively.