The normal value of urine microalbumin is <30mg/L. Urine microalbumin 23mg/L is within the normal range and not serious. Urine microalbumin elevation is divided into physiological and pathological two kinds, physiological including strenuous exercise, consume a lot of high protein food, etc., after removing the relevant factors will usually return to normal; pathological including diabetic nephropathy, hypertensive nephropathy and so on. Under normal circumstances, urine microalbumin should be less than 30mg/L, if higher than the normal value, it should be taken seriously. Urine microalbumin 23mg/24h is within the normal range, not very serious. If the urine microalbumin is elevated, you should go to the hospital in time, under the guidance of professional physicians to clarify the cause and timely treatment.