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What is this test?

The urate crystals test is a microscopic examination of your urine sediment. During this test, a sample of your urine is spun in a centrifuge to separate the solid particles from the liquid. The sediment is then examined under a high-power microscope to identify and count urate crystals. Urate crystals are naturally occurring compounds that can form in urine when the body breaks down purines, substances found in certain foods and body tissues.

How is the test performed?

You will be asked to provide a clean catch urine sample. For this test, you will clean your genital area before urinating, then begin urinating into the toilet and then stop the stream. You will then place the collection container under you to catch the middle portion of your urine stream. The sample is sent to a laboratory where it is processed and examined under a microscope. The technician counts the number of urate crystals seen in each high-power field of view.

What do the results mean?

Results are typically reported as the number of urate crystals seen per high-power field (HPF). Small amounts of urate crystals are commonly found in healthy individuals and are usually not a cause for concern. However, larger amounts of crystals may indicate: gout (a type of arthritis), kidney stones, urinary tract infection, or dehydration. Your healthcare provider will interpret your results in the context of your overall health, symptoms, and other test findings.

Are there any risks?

This test involves only a routine urine collection, which carries no significant risks. You may experience minor discomfort or embarrassment during the sample collection process, but there are no physical risks associated with providing a urine sample for this test.