24-hour urine protein test

A 24-hour urine protein test measures the amount of protein in your urine collected over a full day. Normally, the kidneys filter waste while keeping proteins in the bloodstream. If the kidneys are damaged, they may leak protein into the urine. This test helps assess kidney function and detect kidney disease early. You start by discarding the first urine of the day, then collect all urine for the next 24 hours in a special container. The sample is then analyzed in a lab to determine the total protein content, providing valuable information about your kidney health.