Random urine microalbumin is generally more accurate and is a commonly used urine protein test in the clinic. Urine microalbumin test can be carried out through 24-hour urine and morning urine in two ways, the two methods of reference interval is different, are commonly used in clinical testing methods, so the morning urine microalbumin is generally more accurate, if the urine protein bias is too much, the measurement of 24-hour urine is more accurate. Under normal circumstances, albumin can not pass the glomerular filtration barrier, when the glomerulus is slightly damaged, albumin can be leaked in the urine and urine microalbumin, is an important indicator of early diagnosis of glomerular disease. Normal urine microalbumin is less than 30mg/L. When the urine microalbumin result is abnormal, it can be seen in the urine. When the result of urine microalbumin is abnormal, it may suggest glomerular lesions, and the cause of the disease should be clarified under the guidance of the doctor and actively treated.