Copper (Serum)
Copper is an essential trace mineral measured in your serum. It helps your body form red blood cells, maintain nerves and connective tissue, and support energy production and iron metabolism.
Copper works closely with iron and supports blood vessels, nerves, and immune function. Its serum level is influenced by inflammation and by your zinc intake, since high zinc can lower copper. Both deficiency and excess are uncommon but can have meaningful effects on blood and nerves.
A high copper level can reflect inflammation, certain conditions, or hormonal factors such as estrogen, since these can raise the copper-carrying protein in blood. It can also occur in rare disorders of copper handling. A high value is interpreted in context rather than assumed to be dietary.
A low copper level suggests a shortfall, which can arise from very high zinc intake, malabsorption, or rarely low intake, and can affect blood cells and nerves. It sometimes shows up alongside unexplained anemia.
Labs provide a reference range, and copper is often interpreted alongside zinc and inflammatory markers. A clinician can help you understand your result.
Sources
Educational context only, not medical advice or a diagnosis. Reference ranges vary by lab, age and sex; always discuss your results with a clinician.