A normal microalbumin level is less than 30 milligrams, according to Mayo Clinic. Results between 30 and 300 milligrams suggest early kidney disease, while more than 300 milligrams is indicative of advanced kidney disease.
Various elements affect the results of a microalbumin test, states Mayo Clinic. For instance, blood in the urine, fever and some types of medication can result in higher than normal results. Additional causes of a high test result include exercise, the presence of a urinary tract infection or other types of kidney diseases.
Albumin is a protein that is normally found in the blood, explains WebMD. This protein is filtrated by the kidneys and is normally found in a person's urine in very small amounts. However, when the kidneys are impaired, more albumin leaks into the urine than normal.
Most often, a microalbumin test is done to detect early kidney disease, according to Mayo Clinic. Early detection can slow or prevent kidney disease that is more advanced. How often this test is done is dependent on what underlying medical conditions a person has, as well as an individual's risk of developing kidney disease. A person who has an elevated level of microalbumin in the urine, type 1 diabetes, type 2 diabetes or high blood pressure typically requires more frequent testing.