When your kidneys are healthy, very little albumin is present in the urine and the microalbumin/creatinine ratio is low. The level of albumin in your urine may be higher than normal because of kidney disease. Common causes of kidney disease include diabetes, high blood pressure, and autoimmune disorders.A urine microalbumin test is a test to detect very small levels of a blood protein (albumin) in your urine. A microalbumin test is used to detect early signs of kidney damage in people who are at risk of developing kidney disease.Creatinine is a chemical waste product of creatine. Creatine is a chemical the body makes to supply energy, mainly to muscles. This test is done to see how well your kidneys work. Creatinine is removed by the body entirely by the kidneys. If kidney function is not normal, creatinine level in your urine decreases