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How Total IgA Affects Celiac Disease Screening

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Quick Answer (Key Relationship)

If total IgA is deficient, tTG-IgA can be falsely negative. Total IgA is tested to validate the screening test.

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This deep-dive is part of our "Digestive Health" collection, connecting metabolic data to measurable health outcomes.

Medical Disclaimer: This deep-dive is for educational purposes. Always consult a physician before interpreting metabolic labs or starting a supplement regimen.