Urine microalbumin test requires 24-hour urine retention, or urine microalbumin creatinine ratio measurement with random urine. In the early stage of various kidney diseases, especially the early stage of diabetic nephropathy, patients will show excessive urinary microalbumin, at this time, the albumin content is low, urine routine often can not be detected, the need for urine microalbumin measurement. The most accurate measurement method is to retain 24 hours of urine (be sure to complete 24 hours of urine, so as not to cause errors), measurement and mixing, take a small amount of urine microalbumin excretion rate. Random urine can also be used to determine the urine microalbumin creatinine ratio, the test can also accurately reflect the amount of urine microalbumin. When checking urine microalbumin, you need to pay attention to avoid colds, fever, strenuous exercise and other conditions that may cause false positives, if necessary, you can consult the doctor for related precautions, and follow the doctor’s instructions to complete the test.