LabCorp Test

Microalbumin/Creatinine Ratio Urine Test, Random

Quick Overview

Urine test that may help to determine if kidneys are functioning normally. This test is an early indicator of kidney failure.

Test #140285


Availability: In stock

Also Known As Albumin:Creatinine Ratio, Random Urine; UACR
Preparation No special preparation required.
Test Results 1-2 days. May take longer based on weather, holiday or lab delays.


The microalbumin/creatine ratio measures the tiny amounts of albumin that the body begins to release into the urine several years before significant kidney damage becomes apparent. Albumin, a protein produced in the liver, is present in high concentrations in the blood, but when the kidneys are functioning properly, virtually no albumin is allowed to leak through into the urine. Creatinine, a byproduct of muscle metabolism, is usually excreted into the urine on a consistent basis. Creatinine's level in the urine is relatively stable. Since the concentration (or dilution) of urine varies throughout the day, this property of creatinine allows the measurement to be used as a corrective factor in random/spot urine samples.

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