A test that measures the level of uric acid in the blood. It is an important parameter in the follow-up of gout, kidney stones and metabolic syndrome.
Indication
- Diagnosis and follow-up of gout
- Joint pain, swelling and redness
- History of recurrent kidney stones
- Assessment of metabolic syndrome and obesity
- Follow-up during certain chemotherapy regimens (risk of tumor lysis syndrome)
- Assessment of cardiovascular risk in hypertension and heart disease
- Monitoring the effectiveness of uric acid lowering therapy
Preparation
- Fasting for 8 hours is preferred
- Avoiding alcohol for 24 hours before the test is recommended
- Avoiding excessive meat consumption and strenuous exercise is recommended
- Medications such as diuretics and aspirin should be reported to the physician
How it's performed
- A venous blood sample is drawn from the arm
- The sample is sent to the laboratory
- Uric acid level is measured by an enzymatic method on an automated analyzer
- The result is usually available the same day
Post-procedure
- Generally, levels below 7 mg/dL in men and below 6 mg/dL in women are considered normal
- At elevated levels, the risk of gout flare and kidney stones is assessed
- Dietary advice is provided (limiting red meat, organ meats, alcohol and fructose)
- When indicated, uric acid lowering therapy (allopurinol, febuxostat) may be initiated
- Follow-up every 3-6 months is recommended during treatment
Risks
- Temporary pain or bruising at the blood draw site
- Very rare vasovagal reaction
- Rare infection after venous puncture
- Risk of misleading results when fasting and dietary recommendations are not followed before the test
FAQ
Does high uric acid always mean gout?
No. Many people may have elevated uric acid (hyperuricemia) without developing a gout flare; the diagnosis is established through clinical findings and joint fluid analysis.
How much does diet affect uric acid?
Red meat, organ meats, seafood, alcohol and sugary drinks may raise uric acid levels; a balanced diet and ample water intake are recommended.
Do I need to fast for the test?
Eight hours of fasting is preferred; testing in the morning provides more reliable results.
Is treatment needed if the results are normal?
Treatment is generally not needed when values are normal; your physician will decide based on your risk factors.
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