What is a Protein-Losing Enteropathy Scan?
A protein-losing enteropathy scan is a specialized imaging test that helps doctors diagnose conditions where proteins are abnormally lost through the intestines. This protein loss can lead to malnutrition and other health problems.
Why Might I Need This Scan?
Your doctor may recommend this scan if:
- You have unexplained low protein levels in your blood
- You’re experiencing symptoms of malnutrition despite adequate nutrition
- Other tests have not identified the cause of your symptoms
- Your doctor suspects protein is being lost through your digestive system
How Does the Scan Work?
The scan uses a natural protein found in your blood called human serum albumin:
- This albumin is labeled with a small amount of radioactive material
- The labeled albumin is injected into your bloodstream
- Normally, this protein stays within your blood vessels
- If you have a protein-losing condition, the protein will leak into your intestines
- A special camera (gamma camera) can detect the radioactive signal from the albumin in your gastro-intestinal tract
- This allows doctors to see exactly where protein is leaking or if there is widespread loss throughout your intestines
What to Expect During the Procedure
Before the Scan
- No special preparation is usually required
- You may be asked about medications you’re taking
- Let your doctor know if you’re pregnant or breastfeeding
During the Scan
- You’ll lie on an examination table
- A small amount of radioactively labeled albumin will be injected into a vein in your arm
- Immediately after injection, imaging will begin
- The gamma camera will take pictures continuously for up to 90 minutes
- You’ll need to lie still during this time
- The procedure is painless, but you may experience some discomfort from lying in one position
After the Initial Scan
- You may be able to leave the department temporarily
- You’ll be asked to return for a second set of images 4-6 hours after the injection
- This second scan helps identify patterns of protein loss over time
- The second imaging session is usually shorter than the first
After the Procedure
- You can resume normal activities immediately
- Drink plenty of fluids to help eliminate the radioactive material
- The small amount of radiation used in this test is considered safe and will leave your body naturally within a day or two
- The results will be analyzed by a specialist and sent to your doctor, who will discuss them with you
Are There Any Risks?
The amount of radiation used is very small and poses minimal risk. The benefits of diagnosing the cause of your protein loss generally outweigh any potential risks from the procedure.
If you have any questions or concerns about your protein-losing enteropathy scan, please discuss them with your doctor.
