Alternate Names

  • Cu
  • 24-hour Urine Copper
  • Total Copper
  • Non-Ceruloplasmin-Bound Copper
  • Free Copper
  • Hepatic Copper

Copper levels are tested to measure the amount of copper in the blood, urine, or liver; to help diagnose and monitor Wilson's disease; and to identify rare copper deficiencies or toxicity. Wilson's disease is an inherited condition that results in high copper levels is the brain, liver, and other internal organs. Low copper levels are seen in people with celiac disease or cystic fibrosis, and in babies fed formulas containing cow's milk.


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