How do I know if I have Celiac Disease?

To determine if you have Celiac Disease, you must undergo specific blood antibody testing followed by a diagnostic biopsy while still consuming gluten, as self-diagnosis or eliminating gluten before testing can lead to inaccurate results.

Recognizing the Signs

Celiac Disease is a systemic autoimmune condition, meaning symptoms extend far beyond the gut. Common indicators include chronic diarrhea or constipation, unexplained abdominal pain, bloating, and unintentional weight loss. However, many individuals with Celiac Disease present with "silent" or non-classical symptoms, such as iron-deficiency anemia, unexplained fatigue, skin rashes (dermatitis herpetiformis), joint pain, or persistent neurological fog.

When to See a Doctor

If you notice a consistent pattern where symptoms worsen after eating wheat, barley, or rye, keep a detailed food and symptom diary to share during your consultation. When speaking with your physician, be explicit: "I am concerned that my symptoms may be related to Celiac Disease; can we initiate the standard screening protocol?"

The Diagnostic Pathway

The first step is a serological blood test, specifically the Tissue Transglutaminase (tTG)-IgA test. It is vital that you do not start a gluten-free diet before this blood work, as your body must be actively reacting to gluten for the antibodies to be detectable. If the blood test is positive, a gastroenterologist will typically perform an upper endoscopy with a biopsy of the small intestine to confirm damage to the villi.

Self-Advocacy and Red Flags

If your doctor dismisses your concerns, request that they document the refusal in your medical record; this often encourages a more thorough clinical review. Seek urgent medical evaluation if you experience severe dehydration, significant unintentional weight loss, or blood in your stool. While some occasional bloating after a large meal is normal, Celiac Disease typically presents as a persistent, chronic health disruption that does not resolve with lifestyle changes alone.

Disclaimer: This information is for educational purposes and does not replace professional medical advice, diagnosis, or treatment. Always consult with your healthcare provider regarding your specific health concerns.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Celiac Disease


• Orphanet: Celiac disease


• Celiac Disease Foundation: Symptoms and Diagnosis