Renal MAG3 Scan

Also known as: MAG3 Lasic renal scan, Lasix scan.

What is a renal MAG3 scan?

Renal MAG3 scan is an imaging test that examines the shape, size, position and function of the kidneys. It’s a nuclear medicine test that involves using a radioactive material in order to add clarity to the images related to the test.

What happens during the procedure?

The patient lies down on a table, and an IV is used to injected a special radioactive liquid into the veins. A catheter is also used to keep the bladder empty of urine during the test. Then a special camera is used to take images of the kidneys and surrounding area.

Is any special preparation needed? 

No special preparation is needed for the test.

What are the risk factors?

Urinary tract infection or damage to the urethra or bladder are potential risks of the catheter. The risks of radiation exposure are mild.

Reviewed by: Felix I Ramirez-Seijas, MD

This page was last updated on: July 29, 2022 05:10 PM


The Division of Nephrology at Nicklaus Children’s Hospital treats kidney disorders and provides comprehensive evaluation of renal functions, including kidney biopsies.

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