Lasix renal scan

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Learn how a Lasix renal scan is done and how it shows how the kidneys are working.

Key points

  • A Lasix renal scan is a test to look at how the kidneys are working. It can take up to two hours.
  • Your child will have an injection to get fluids, a tiny amount of radioactive medicine, and Lasix medication. A catheter will then be inserted in their urethra to keep their bladder empty while a special camera takes pictures of their kidneys.
  • Your child will need to urinate more than usual after the test because of the Lasix medication. Give them clear fluids regularly to keep them hydrated.
  • A nuclear medicine doctor will send the results of the scan to your family doctor or paediatrician (child's doctor) within two working days. The person who does the scan cannot give the results.
Last updated: December 5th 2013