Copper
Copper is an essential trace mineral needed to make red and white blood cells, protect nerves and build connective tissue. Low levels can cause anaemia and nerve problems; high levels can signal inflammation, liver disease or excess intake. Fasting is not required.
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What the Copper test tells you
Copper is a trace mineral the body needs in small but steady amounts. It is part of enzymes that help release iron for making red blood cells, keep white blood cells in normal numbers, protect the coverings of nerves, cross-link collagen in skin and blood vessels, and produce energy inside cells. The body absorbs copper from food in the upper gut, stores it mainly in the liver and removes any excess through bile.
Most of the copper measured in a blood sample is carried by ceruloplasmin, a protein the liver makes. That link explains much of how the test behaves. Anything that raises ceruloplasmin, such as inflammation, pregnancy, the contraceptive pill or hormone therapy, raises serum copper without any true excess, and anything that lowers ceruloplasmin, such as protein loss or severe liver disease, lowers it. Zinc matters too: high-dose zinc supplements block copper absorption in the gut and are one of the most common reasons for a low result.
Doctors usually order the test when an unexplained anaemia or low white cell count does not respond to iron, when there are nerve symptoms such as numbness or unsteady walking, after weight-loss surgery, or with long-term zinc use. It is also part of the work-up for Wilson disease, a rare inherited condition in which copper builds up in the liver and brain; there the blood copper is often low or normal, so it is read with ceruloplasmin and a 24-hour urine copper rather than on its own.
Ordered when copper deficiency or excess is suspected: anaemia or a low white cell count that does not respond to iron, numbness or unsteadiness, long-term zinc supplements, weight-loss surgery, or when Wilson disease is being investigated.
- Anaemia that does not respond to iron
Copper is needed to use iron and make blood cells. Anaemia or a low white cell count that persists despite iron can point to copper deficiency.
- Nerve symptoms
Low copper can damage the spinal cord and nerves, causing numbness and unsteady walking that can look like vitamin B12 deficiency.
- Zinc use and gut surgery
High-dose zinc and weight-loss surgery both reduce copper absorption. Testing checks whether levels have fallen.
- Investigating Wilson disease
Copper is measured with ceruloplasmin when a rare inherited copper build-up is suspected in younger people with liver or nerve symptoms.
Reasons your doctor may request the Copper test
Your doctor may order this test for any of the reasons below. Some are routine checks, others follow specific symptoms or an earlier result.
Anaemia & nerve symptoms
- Anaemia or a low white cell count that does not improve with iron or other usual treatment.
- Numbness, tingling, unsteady walking or other nerve symptoms with no clear cause.
Absorption & supplements
- Long-term use of zinc supplements or zinc-containing denture creams.
- Previous weight-loss surgery, long-standing bowel disease or long-term intravenous feeding.
Wilson disease & monitoring
- Suspected Wilson disease in a young person with liver disease, tremor or behavioural change.
- Monitoring during treatment for a copper disorder or copper replacement.
A result in the Normal band, 70 to 140 µg/dL, is the usual adult finding. Because most blood copper is carried by ceruloplasmin, the figure reflects that protein as much as your copper stores. A result in the Low band, below 70 µg/dL, can come from long-term zinc supplements, weight-loss surgery, malabsorption, protein loss through the kidneys or gut, or, rarely, Wilson disease, where low ceruloplasmin lowers the blood level even though copper is building up in the liver. A result in the High band, above 140 µg/dL, is most often due to oestrogen from the pill or hormone therapy, pregnancy, or infection and inflammation, and less often to liver conditions that block bile flow or to excess intake. Your doctor reads it with ceruloplasmin, zinc, a blood count and liver tests, and repeats it once any illness has settled.
Medically reviewed by Dr Nirupama Sabhapathy
Ranges are a guide: your physician interprets your result alongside your symptoms and history.
What a higher result can point to
- Oestrogen from the combined contraceptive pill or hormone therapy, which raises ceruloplasmin.
- Pregnancy, which raises copper steadily towards the third trimester.
- Infection, inflammation or injury, because ceruloplasmin rises as part of the acute-phase response.
- Liver conditions that reduce bile flow, since bile is the main route for removing copper.
- Excess copper from supplements or contaminated water, or occupational exposure.
What a lower result can point to
- Long-term high-dose zinc supplements, which block copper absorption in the gut.
- Weight-loss surgery or other gut surgery that bypasses where copper is absorbed.
- Malabsorption from coeliac disease, inflammatory bowel disease or chronic diarrhoea.
- Protein loss through the kidneys or gut, which removes ceruloplasmin and the copper it carries.
- Wilson disease, where low ceruloplasmin lowers the blood level even though copper builds up in the liver.
- Long-term intravenous feeding without adequate copper, or severe malnutrition.
These are possibilities, not diagnoses. A single value outside the reference range is interpreted alongside your symptoms, history and other tests: your doctor decides what it means for you.
What this test cannot tell you
- Serum copper mostly reflects ceruloplasmin, so anything that raises or lowers that protein moves the result without a real change in copper stores.
- Inflammation, oestrogen and pregnancy can lift the value into or above the usual range and hide a deficiency.
- A normal result does not rule out Wilson disease, which needs ceruloplasmin, urine copper and specialist assessment.
- It cannot show how much copper is stored in the liver or other tissues.
Risks of the blood draw
- Mild bruising or brief soreness where the needle went in.
- Occasional lightheadedness, which settles after a few minutes of rest.
- Bleeding or infection at the site, which is rare with sterile single-use equipment.
- 1Copper helps make red and white blood cells, protects nerves and strengthens connective tissue.
- 2Most copper in the blood travels bound to ceruloplasmin, a protein made by the liver.
- 3High-dose zinc supplements and weight-loss surgery are common causes of low copper.
- 4Oestrogen, pregnancy and inflammation raise the reading without any true copper excess.
- 5The value guides your doctor alongside ceruloplasmin, zinc and a blood count; it is not a diagnosis on its own.
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Frequently Asked Questions
Everything you need to know about the Copper test. Can't find what you're looking for?
Talk to our team→The two compete for absorption in the gut, so long-term high-dose zinc supplements are one of the commonest causes of copper deficiency. Checking both shows whether a supplement or a diet has tipped the balance.
No. In Wilson disease copper builds up in the liver and brain, but the blood level is often low or normal because ceruloplasmin, the protein that carries copper, is reduced. Diagnosis relies on ceruloplasmin, a 24-hour urine copper and specialist assessment.
Yes. Oestrogen raises the liver's output of ceruloplasmin, so the combined pill, hormone therapy and pregnancy all push serum copper up, sometimes above the usual range, without any copper excess. Let us know if any of these apply to you.
Copper deficiency can cause anaemia and a low white cell count that do not respond to iron, and nerve damage that affects balance and sensation in the feet, which can resemble vitamin B12 deficiency. It is seen most often after weight-loss surgery or with heavy zinc use.
Copper is an essential trace mineral needed to make red and white blood cells, protect nerves and build connective tissue. Low levels can cause anaemia and nerve problems; high levels can signal inflammation, liver disease or excess intake. Fasting is not required.
It is ordered when copper deficiency or excess is suspected: anaemia or a low white cell count that does not respond to iron, numbness or unsteadiness, long-term zinc supplements, weight-loss surgery, or when Wilson disease is being investigated.
No, fasting is not mandatory for the Serum Copper test, so you can eat and drink normally beforehand. Ask your doctor whether to pause copper or zinc supplements before the test.
The Serum Copper test uses a blood sample, collected quickly by our DHA-licensed phlebotomist with minimal discomfort.
Results for the Serum Copper test are typically ready within 3 to 4 days. You will receive a secure digital report, and your Smart Report highlights anything outside the normal range.
The Serum Copper test is AED 80, which includes a physician-reviewed report. Home collection is free when your order comes to AED 300 or more or includes a package; below that, a AED 100 home collection fee applies (AED 50 for a lab walk-in). You can also build a custom panel and pay only for the markers you choose.
Yes. A DHA-licensed phlebotomist can collect your sample at home or the office anywhere in Dubai, 7 days a week. Collection is free for orders of AED 300 or more, or any order with a package; otherwise a AED 100 home collection fee applies. See how it works.
It is commonly chosen by all ages. If you are not sure it is right for you, our care team is happy to advise.
Add the Serum Copper test to your cart and complete the short booking wizard, choosing home collection or a lab visit. Guest checkout lets you book without creating an account.
Yes. It is processed at our EIAC-accredited laboratory (ISO 15189:2022) under DHA license 0046381 and verified by board-certified pathologists.
Every report includes reference ranges and plain-language notes. If you have questions, our care team can arrange a clinician review: just get in touch.
Absolutely. Add it to a curated health package or bundle it with any of our 160+ biomarkers, often from a single sample in one visit.