Copper in Urine (24-hour collection)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like muscle pain, weakness, or nerve problems that could be linked to copper imbalance. It may also be used to monitor conditions like Wilson’s disease, a rare genetic disorder affecting copper metabolism, or to check for copper toxicity or deficiency.

What to Expect Before the Test

For a 24-hour urine collection, you’ll need to collect all urine produced in a specific period (usually 24 hours). Start by collecting your first urine sample upon waking. Continue collecting every time you urinate, including at night, and transfer each sample to a container. Keep the samples refrigerated and complete the collection by returning the final sample at the end of the period. Follow your provider’s instructions precisely to ensure accurate results.

What to Expect During the Test

No special preparation is needed beyond the 24-hour urine collection. You’ll likely be given a container or kit to collect your urine samples at home. If you’re unsure about the process, ask your provider for guidance.

What the Results Mean

Results are compared to standard reference ranges, but exact values can vary by lab. High urine copper levels may suggest conditions like Wilson’s disease or kidney issues, while very low levels might indicate copper deficiency. Your provider will interpret results in the context of your overall health and symptoms.