Urine four including urine albumin, urine immunoglobulin, α1-microglobulin, urine NAG enzyme. 1. Urine albumin: urine albumin is mainly reflective of glomerular function, if the value is significantly elevated, it generally indicates glomerular function damage. 2. Urine immunoglobulin: urine immunoglobulin belongs to large molecule protein, its value is abnormal, it indicates that there are certain lesions in the body, generally indicates that the glomerulus is damaged. 3. α1-microglobulin: when α1-microglobulin is abnormal in the test, it generally indicates that the renal tubules are damaged, and it is recommended to consult a doctor for examination in time. 4. Urine NAG enzyme: mainly small molecule proteins, reflecting the damage of renal tubular function. If there is any abnormality in the urine test in daily life, you should consult a doctor in a regular hospital in time and follow the doctor’s instructions to carry out standardized treatment to avoid delaying the condition.