Uric acid need to check is the index of blood uric acid, urine uric acid. The measurement of uric acid is an important indicator for determining gout due to a disorder of purine metabolism or abnormal uric acid metabolism. Uric acid through the blood and urine specimens for laboratory examination, you can find out the value of uric acid. Blood uric acid is measured mainly by drawing blood to do the test, this kind of uric acid is recommended to fasting test. The determination of urinary uric acid is an indicator that reflects the reabsorption and secretion function of uric acid by renal tubules, mainly after limiting purine diet for a period of time, urine is taken to do the determination of uric acid. It is recommended that blood uric acid and urinary uric acid tests be conducted in a regular hospital, and the test and evaluation results be prescribed by a professional doctor.