Gout tests do not require fasting. Gout tests mainly check creatinine and blood uric acid in the kidney function, and this test does not require fasting. For gout patients, in addition to the sudden onset of joint swelling and pain, there will be an increase in the blood uric acid level. If the blood uric acid level is >420 μmol/L, and there is sudden redness and pain in the joints, the diagnosis of gout is basically clear. At the same time, because long-term hyperuricemia tends to hurt the kidneys, blood creatinine tests are also needed to clarify the presence of gouty nephropathy. For patients with gout, they need to lower the blood uric acid level and can take oral febuxostat to lower uric acid.