Uric Acid, Urine 24 Hour

Message

Performing Lab: Central Lab, Regions

Test Code

3328

Alias/See Also

Sunquest: UUA24

CPT Codes
84560

Preferred Specimen

0.2 mL of a 24-hour urine collection

Minimum Volume

0.1 mL

Instructions

Preserve 24 hour urine collection with refrigeration.

Consult Urine Collection/Processing Information for acceptable preservatives

Transport Temperature

Refrigerated

Specimen Stability

Refrigerated: 7 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Unacceptable preservatives

Methodology
Colorimetric: Uricase

Setup Schedule

Hospital: Daily
Clinics: Monday - Friday

Report Available

Same Day

Reference Range

250 - 750 mg/24 hours

Clinical Significance

Uric acid is the end-product of purine metabolism. It is freely filtered by the glomeruli and most is reabsorbed by the tubules. Increased levels of uric acid in the urine usually accompany increased plasma uric acid levels unless there is a decreased excretion of uric acid by the kidneys. Urine uric acid levels reflect the amount of dietary purines and also endogenous nucleic acid breakdown. It is often used to assess and manage patients with kidney stones.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.