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Gout
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Testing
The goals with testing are to identify gout, to distinguish it from other conditions, such as other types of arthritis that may have similar symptoms, and to investigate the cause of increased uric acid concentrations in the blood.
Laboratory Tests
Synovial fluid analysis – used to detect the needle-like crystals derived from uric acid, other crystals that may be present, and to look for signs of joint infection.
Uric acid – to detect elevated levels in the blood
Basic Metabolic Panel (BMP) – this is a group of tests that may be used to evaluate and monitor the patient’s kidney function
Sometimes other tests, such as an RF (rheumatoid factor) or an ANA (anti-nuclear antibody) test may be ordered to rule out other causes of arthritis symptoms. A blood culture and/or synovial fluid culture may be ordered if septic arthritis (arthritis due to an infected joint) is suspected.
Non-Laboratory Tests
X-rays of the affected joints may show uric acid deposits and damage indicative of gouty arthritis.
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This article last reviewed on October 22, 2006.
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