Nutrition
Celiac Disease Screening Basics
Celiac disease screening basics require gluten-containing diet before tTG-IgA blood tests—autoimmune celiac differs from intolerance and needs clinician-led diagnosis.
Celiac disease screening basics start with blood tests for tissue transglutaminase IgA while you still eat gluten—going gluten-free first can falsely normalize labs. Positive screens lead to small-bowel biopsy or specialist-confirmed diagnosis in many guidelines.
Celiac is autoimmune, not the same as lactose intolerance or non-celiac gluten sensitivity. Family history and symptoms like chronic diarrhea, anemia, or dermatitis herpetiformis raise suspicion.
Common questions
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Should you start gluten-free before celiac blood work?
No—avoid starting strict gluten-free before screening unless your clinician directs a specific protocol; prior elimination can delay accurate diagnosis for months.
Related terms
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