In general, patients with blood uric acid 900 μmol/L have relatively severe conditions. Normal human blood uric acid is 89~357μmol/L for women and 150~416μmol/L for men. Normal human blood uric acid is 89~357 μmol/L for women and 150~416 μmol/L for men, so blood uric acid 900 μmol/L is well above the upper limit of the normal reference range and higher than 540 μmol/L, and uric acid-lowering therapy should be initiated immediately, regardless of the presence of gout, cardiovascular risk factors, or cardiovascular disease in that patient. Patients with blood uric acid 900 μmol/L may be complicated by metabolic syndrome, coronary atherosclerotic heart disease, acute renal failure, uric acid nephrolithiasis, and other diseases and lead to serious consequences if left untreated. It is recommended that patients with blood uric acid 900μmol/L should go to endocrinology, rheumatology and immunology departments in regular hospitals for timely consultation and treatment as prescribed by doctors to avoid delays.