24-Hour Urine Uric Acid Rate

Why Is This Test Done?

Your healthcare provider may order this test to check if your kidneys are removing uric acid properly. It can also help diagnose conditions like gout, kidney stones, or other metabolic issues that affect uric acid levels. Sometimes, it’s used to monitor long-term kidney health or to evaluate how well medications are working to lower uric acid.

What to Expect Before the Test

You’ll need to collect all of your urine for a full 24-hour period, typically starting and ending with your first morning urine. Drink plenty of fluids to help dilute your urine, but avoid excessive caffeine or alcohol, as they can affect results. Follow your provider’s instructions precisely to ensure accurate measurements.

What Happens During the Test?

No special preparation is needed beyond collecting urine in a container over 24 hours. The collected sample is then sent to a lab for analysis. The test measures the total uric acid content in your urine, not just the amount in your blood.

What Do the Results Mean?

Results are usually reported as the total amount of uric acid excreted in milligrams (mg) or another unit over 24 hours. High levels may indicate kidney problems, gout, or other metabolic disorders, while very low levels might suggest certain genetic or dietary factors affecting uric acid production.