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    Uric Acid in Urine

    How It Is Done

    A uric acid urine test is usually done at home. You must collect all the urine you produce in a 24-hour period.

    • You start collecting your urine in the morning. When you first get up, empty your bladder. But do not save this urine. Write down the time that you urinated to mark the beginning of your 24-hour collection period.
    • For the next 24 hours, collect all of your urine. Your doctor or lab will usually provide you with a large container that holds about 1 gal (4 L). The container has a small amount of preservative in it. Urinate into a small, clean container. Then pour the urine into the large container. Don't touch the inside of the container with your fingers.
    • Keep the large container in the refrigerator when you aren't using it.
    • Empty your bladder for the last time at or just before the end of the 24-hour period. Add this urine to the large container, and record the time.
    • Do not get toilet paper, pubic hair, stool (feces), menstrual blood, or other foreign matter in the urine sample.

    How It Feels

    Taking a 24-hour urine sample does not cause pain.

    Risks

    A 24-hour urine sample doesn't cause any problems.

    Results

    The uric acid urine test measures the amount of uric acid in a sample of urine collected over 24 hours.

    These numbers are just a guide. The range for "normal" varies from lab to lab. Your lab may have a different range. Your lab report should show what range your lab uses for "normal." Also, your doctor will evaluate your results based on your health and other factors. So a number that is outside the normal range here may still be normal for you.

    Results are usually available in 1 to 2 days.

    Uric acid in urine 1
    Normal:

    250-750 milligrams (mg) per 24-hour urine sample

    1.48-4.43 millimoles (mmol) per 24-hour urine sample

    Women typically have slightly lower uric acid levels than men.

    Many conditions can change uric acid levels. Your doctor will talk with you about any abnormal results that may be related to your symptoms and past health.

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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