A urine protein-creatinine ratio test measures the levels of protein in your urine. Values that are higher than normal may be a sign of kidney disease.

A phlebotomist is often responsible for performing the test. They withdraw blood from a vein in your arm. If the A/G ratio results are abnormal, it may indicate a serious underlying health condition.

Find out what you need to know about the CD4:CD8 ratio test. Learn why your doctor asks for it, what information they get from it, and what it means for you.