Serum Copper Concentration

Why Is This Test Done?

Your doctor may order this test if you have symptoms like nausea, vomiting, liver problems, or signs of copper toxicity. It can also be part of diagnosing conditions like Wilson’s disease, which involves abnormal copper buildup, or Wilson’s disease-related complications. Rarely, it may be checked in cases of suspected copper deficiency or after exposure to copper-containing medications or supplements.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the draw if your test involves a fasting sample. Wear a loose shirt for easy access to your arm. If you’re on medications or supplements that affect copper levels, let your doctor know.

What Happens During the Test?

A healthcare professional will insert a small needle into your arm to draw blood. You may feel a slight pinch, but it’s over quickly. The blood is then sent to a lab for analysis. The process takes about 15 minutes total.

What the Results Mean

Results are compared to standard reference ranges, but exact values can vary by lab. High levels may indicate conditions like Wilson’s disease or liver disease, while very low levels could suggest copper deficiency or malabsorption issues. Your doctor will interpret results in the context of your symptoms and medical history.