General instructions for Urine copper (cupruria)

Test that measures the amount of copper eliminated in the urine, generally collected over a 24-hour period.

  • Definition: A test that measures the amount of copper excreted in the urine, generally collected over a 24-hour period.
  • Fasting: No fasting is necessary for this test. You can eat and drink normally, maintaining your usual intake of liquids and water throughout the time the collection lasts.
  • Medication: Certain vitamin or mineral supplements can alter copper levels. However, do not interrupt any treatment on your own; the decision to stop, maintain, or adjust your usual medication must always be discussed with your doctor.
  • Clothing and Accessories: Since it is a collection you will generally perform in the comfort of your home, there are no specific clothing requirements or restrictions regarding the use of jewelry, piercings, or metal objects.
  • Specific Requirements: This test is usually a 24-hour urine collection. The lab will give you a special container (it must be metal-free). The procedure consists of discarding the first urine of the morning and noting the time. From then on, you must collect all urine for the next 24 hours, including the first urine of the morning of the next day. It is essential to keep the container in the refrigerator or a cool place throughout the process.
  • Expected discomfort or pain from the test: None. It is a completely painless and non-invasive test, since it only involves urinating naturally into a container.