Understanding the marker
Copper supports iron handling, red-cell formation and connective tissue. Its blood level is measured for specific questions about deficiency or excess.
Copper is interpreted with symptoms, inflammation and any relevant medicines or supplements. High zinc intake can reduce copper availability. Sometimes ceruloplasmin, a copper-carrying protein, or other tests are needed; copper alone does not assess the completeness of a diet.
What does high Copper mean?
High copper can reflect changes in its carrying proteins, including during inflammation or some hormone treatments. The clinical context and related tests help distinguish this from excess copper exposure.
What does low Copper mean?
Low copper is assessed with intake, absorption and any zinc supplements. The result alone does not establish the cause; related blood tests and symptoms help determine whether there is a deficiency.
More markers in the same area
- Vitamin D (25-OH)the blood measure used to assess vitamin D supply
- Vitamin B12needed for nerves and red cells
- Folate (B9)helps your body make new cells
- Vitamin A (Retinol)for vision, immunity, and skin
- Vitamin E (alpha-Tocopherol)a vitamin that helps protect cell membranes
- Holotranscobalaminthe portion of B12 available for cells to take up
This is general information about the marker, not an assessment of your values and not medical advice. Last updated: October 2026.