Uric Acid Test
A test that measures uric acid — a waste product the body makes when it breaks down chemicals called purines — in a sample of blood (or urine).
Uric Acid Test
A test that measures uric acid — a waste product the body makes when it breaks down chemicals called purines — in a sample of blood (or urine).
Also known as
- Serum urate
What it measures
- Uric acid level in blood (or urine)
Why a doctor may order it
A doctor may ask for it if you have symptoms of gout — intense pain, swelling, redness and warmth in a joint, often the big toe. It may also be used during some cancer treatments, and to look into kidney stones (using a urine sample).
What it helps evaluate
It can help a doctor look into gout and other conditions linked to high uric acid, such as kidney stones. A high level on its own does not mean you have these problems.
Preparation
Many medicines, including aspirin, and niacin (vitamin B3) can affect the result. Tell the person taking your sample about everything you take, and do not stop any medicine unless your doctor tells you to.
Fasting
Ask your doctor or the lab whether you need to fast, especially if other tests are done on the same sample.
Important considerations
- Uric acid can be measured in blood or in urine.
- Certain medicines, such as diuretics, can raise uric acid levels — talk to your doctor before changing any medicine.
Discuss results with your doctor
Sudden severe joint pain with swelling and redness needs prompt medical attention. Otherwise, talk to a doctor about your symptoms and what your results mean.