• Can it help diagnose metabolic disorders?

Yes, the test can assist in diagnosing certain rare metabolic disorders that cause the body to excrete high levels of uric acid in the urine.

• How is this test used for individuals with a history of kidney stones?

The test helps evaluate the risk of uric acid stone formation in the kidneys, particularly for individuals who have a personal or family history of these stones.

Medical Laboratories

24-Hour Urine Uric Acid Test

Measuring total uric acid excreted over 24 hours to identify causes of recurrent stones and guide dietary and medical treatment with high precision based on results.

Trusted medical contentUpdated: 04-09-2026Views: 70LHL-3232

About this service

A quantitative test measures the total amount of uric acid excreted in the urine over a 24-hour period. It aims to assess purine metabolism in the body and classify hyperuricemia into two types: overproducers/overexcretors, where urinary excretion is high, and underexcretors, where urinary excretion is normal or low despite elevated blood uric acid levels. This classification is crucial for diagnosing the cause of uric acid stones and guiding treatment (such as using medications like allopurinol for overproducers, or urinary alkalizers for underexcretors).

Conditions and notices

Fasting is not required

Fasting is not required, but your doctor may ask you to follow a low-purine diet for 3-5 days before the examination and on Friday for a baseline assessment.

Avoid alcohol before and during the sample collection period.

Accuracy in collecting the full 24-hour sample is the most important requirement. Any deficiency in collection leads to an inaccurate result.

The urine collection container must be kept in the refrigerator (at a temperature of 4 degrees Celsius) throughout the collection period.

Inform your doctor about all medications, as some (such as high doses of aspirin, vitamin C, and diuretics) may affect the outcome.

Frequently Asked Questions

Short answers to the FAQs published with this service.

• What does the 24-hour urine uric acid test evaluate?

This quantitative test evaluates how the body metabolizes purines and classifies hyperuricemia into either overproduction or under-excretion types.

• Does this test require fasting?

Fasting is not required for the 24-hour urine uric acid collection.

• How is this test used for monitoring treatment?

It monitors the effectiveness of medications like allopurinol or dietary changes by checking if the uric acid levels in the urine have decreased to target levels.

• Is this test used for patients undergoing chemotherapy?

24-Hour Urine Uric Acid Test

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Conditions and notices

Frequently Asked Questions

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