This is a test for uric acid. High levels may cause crystallization and tissue deposits in joints.
High uric acid can be observed in gout, a condition characterised by pain, swelling, redness and warmth of the affected joints. Uric acid may be caused by excessive intake of red meats, alcohol, bean and bean products and durians. If the uric acid is found to be high, abstinence from these food groups will be helpful.