Uric acid

This test is ordered if you experience joint pain, swelling, or redness (especially in the big toe), which are classic symptoms of gout. It is also used to investigate kidney stones, monitor cancer patients undergoing chemotherapy, or check kidney function.

Generally, fasting (no food or drink except water) for 4 to 8 hours before the test is recommended. Avoid alcohol, vitamin C supplements, and foods high in purines (like red meat, seafood, and organ meats) for 24 hours prior to the test.