In a technetium-labeled red blood cell bleeding scan, blood is taken
from you, and a small amount of radioactive material called technetium is added
to the blood. The blood with the technetium is then injected back into
Red blood cells with the technetium attached to them accumulate
at the location of active bleeding. A machine scans the body to find where the
technetium accumulates. This method of finding bleeding is sometimes
more effective than angiography. The technetium-labeled red blood cell
bleeding scan may find slow bleeding that can't be seen using
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The technetium-labeled red blood cell bleeding scan is used:
If the source of the bleeding in the large
intestine cannot be found using
colonoscopy or other methods.
bleeding is too slow or intermittent to be detected by
If colonoscopy finds that the bleeding is coming from
a spot in the small intestine and the bleeding does not stop. (The bleeding
stops on its own in most people.)
When surgery is needed to stop
the bleeding. It is important to locate exactly the source of the bleeding
In this article
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
July 19, 2012
This information is not intended to replace the advice of a doctor.
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