The following tests can be used to determine whether the kidneys are diseased: 1. Clinical symptoms, if the patient has swelling of both lower limbs, swollen eyelids, anuria or oliguria, and symptoms such as foamy urine and red urine, the kidneys may be diseased. 2. Laboratory tests, urine routine shows positive urine protein, positive occult blood, red blood cells in the urine, etc., 24-hour urine protein quantification is elevated, and kidney function shows creatinine, urea nitrogen is elevated, If the above laboratory tests are abnormal, the kidneys may have diseases. 3, imaging tests, urological CT or ultrasound can clearly diagnose stones, tumors, cysts and other diseases. If kidney function is abnormal, kidney ultrasound or kidney CT indicates that the volume of both kidneys is reduced, both kidneys are atrophied, and both kidneys have reduced blood flow and other abnormalities.