Zinc in Urine (24-Hour Collection)

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like frequent infections, hair loss, or skin problems that could be linked to low zinc levels. It may also be used to monitor kidney function or diagnose conditions like Wilson’s disease or certain genetic disorders affecting mineral metabolism.

What to Expect Before the Test

You’ll need to collect all urine for a full 24-hour period, typically starting right after you wake up. Store the urine in a refrigerator and return it to your lab on time. Follow your provider’s instructions carefully to ensure accurate results.

How the Test Works

Zinc is measured in your urine sample using a specialized laboratory technique that detects its concentration. The test helps determine how much zinc your body is losing through urine, which can indicate whether zinc levels in your blood are normal or low.

What the Results Mean

Results are compared to standard reference ranges for healthy individuals. Low levels may suggest conditions like malabsorption, chronic kidney disease, or excessive sweating. High levels could indicate certain kidney disorders or overuse of zinc supplements.