Urine microalbumin test retention method is generally divided into 24-hour urine protein quantification and 8-hour urine microalbumin quantification two, in addition to the clinic also carried out with the morning urine check urine microalbumin. 1. 24-hour urine protein quantification: patients need to leave the first day of the time from 8:00 am to 8:00 am the next day the time of the urine, the 24-hour urine will be collected to contain preservatives in the bucket, the next morning to bring the bucket to the hospital, the hospital will be on the urine sampling and testing. 2.8-hour urine microalbumin: patients need to retain from 10:30 pm to 6:30 am the next day between the urine, generally refers to 10:30 pm for a urination, this time the urine is not retained, and then all the nighttime urine retained in a container containing preservatives, the next day, after 6:30 am, the container will be sent to the hospital, the hospital will be sampled for testing. It is important to note that the hospital usually mixes the urine and then takes a sample for testing. In addition, the patient’s total urine volume is measured over an 8-hour or 24-hour period, and the patient is required to keep all the urine from the time of retention and send it to the testing department. Need to stay urine microalbumin patients, it is recommended that regular hospitals, follow the doctor’s instructions for standardized retention, so as to avoid retention of the wrong wrong condition.