Celiac Disease Marker (Anti-Tissue Transglutaminase IgA) Antibody, Stool Probe
This test measures antibodies in your stool that may indicate celiac disease, a condition where the body’s immune system reacts to gluten, a protein found in wheat, barley, and rye.
["Helps detect celiac disease early with a simple stool sample."]
Key facts at a glance
- LOINC
- 5001-3
- Short code
- Enterococ rRNA Spec Ql Probe
- Synonyms
- Enterococ rRNA Spec Ql Probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters
Celiac disease can cause digestive issues like chronic diarrhea, bloating, or weight loss, but many people also experience fatigue, anemia, or other symptoms that may not be obvious. This test checks for antibodies that signal an immune response to gluten, even if you haven’t had symptoms yet.
How It Works
Instead of drawing blood, this test uses a special probe inserted into your rectum to collect a small sample of stool. The sample is then tested for specific antibodies linked to celiac disease.
What to Expect Before the Test
No special preparation is needed, but you may feel mild discomfort during the probe insertion. If you’re pregnant, have a history of bleeding disorders, or have a rectal condition, let your doctor know before the test.
What the Results Mean
Positive results suggest a high likelihood of celiac disease, but further testing (like a blood test or biopsy) may be needed to confirm. Negative results mean the antibodies weren’t detected in this sample, but celiac disease can sometimes be missed with a single test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Anti-TTG IgA Stool Probe
Frequently asked questions
If you have symptoms like unexplained weight loss, frequent diarrhea, or fatigue, or if you have a family history of celiac disease, this test may be recommended. Early diagnosis helps manage symptoms and prevents long-term health issues like nutrient deficiencies or damage to the small intestine.
How often should I get this test?
Can I eat normally before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy