Q: What is albumin in urine? In recent urine examination, the report said albumin - trace. Please advise.

A:Albumin is the main protein present in the blood, which prevents leaking of blood out of the blood vessels. It can appear in urine in a large number of conditions like severe physical stress, fever, infections, kidney diseases etc. In case it persists, you need to consult a physician to find out why this is occurring.