Radiology·Radiology
Renal MAG3 scan
Informed by recognized medical guidance
Overview
A MAG3 scan is a special type of kidney scan that uses a tiny amount of a safe radioactive substance (called a tracer) to take pictures of your kidneys. It shows how well your kidneys are filtering blood and how urine drains out of them.
Key facts
- The scan is painless and usually takes about 30 to 60 minutes.
- The tracer is injected into a vein and does not stay in your body long.
- Your doctor may order a MAG3 scan to check for blockages, measure kidney function, or follow up after a kidney transplant.
This scan is a fairly common and safe test used when doctors need detailed information about kidney function and drainage.
It is used for people of all ages who have signs of kidney problems, such as swelling, high blood pressure, or repeated urinary infections.