To diagnose gout, blood and urine tests are needed but may not always give the answer.
Demonstrating high uric acid in the blood is essential, but you can have a high level of uric acid without having gout. Or you may have normal uric acid levels at the time of a gout attack.
To confirm the presence of gout, fluid drawn from the affected joint may be examined under a special polarizing microscope to see if it shows the characteristic crystals.
X-rays are useful in confirming long-term or chronic...