Blood uric acid is a test to determine the concentration of uric acid, which is measured by the enzyme uricase, and is usually measured at a level of no more than 420 μmol/L. If the uric acid level is elevated, the patient has hyperuricemia, and further investigation is needed to determine whether there is kidney damage, drug effects, or a combination of other If the patient’s uric acid level is elevated, it suggests the presence of hyperuricemia and needs to be further investigated for renal damage, as well as for the influence of medications or the combination of other organic myeloproliferative diseases. In addition to these factors, most elevated blood uric acid levels are associated with primary hyperuricemia and require lifestyle modification and, if necessary, treatment with uric acid-lowering medications. In addition, testing blood uric acid concentration is mainly to understand or clearly diagnose whether gouty arthritis is combined. If the patient has a typical gouty arthritis attack, combined with an increased blood uric acid level, it can help the diagnosis.