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Home blood testing for celiac disease: recommendations for management
Mohsin Rashid1, J Decker Butzner, Ralph Warren
1Dalhousie University, Department of Pediatrics, IWK Health Centre, 5850 University Ave, Halifax, NS B3K 6R8. mohsin.rashid@iwk.nshealth.ca
Insights
Home blood tests can screen for celiac disease, but positive results require a confirmatory small intestinal biopsy. Confirm diagnosis before starting a gluten-free diet.
Area of Science:
- Gastroenterology
- Immunology
- Diagnostic Medicine
Background:
- Increasing availability of self-administered home blood tests for celiac disease.
- Need for clear management guidelines for positive home test results.
Purpose of the Study:
- Provide recommendations for managing patients using home celiac disease blood tests.
- Outline diagnostic pathways following positive self-test results.
Main Methods:
- Systematic literature search of PubMed and Cochrane Database (1985-2008).
- Inclusion of guidelines from American Gastroenterological Association and North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.
- Focus on Level 1 evidence for diagnostic accuracy.
Main Results:
- Home blood tests serve as a screening tool for celiac disease.
- A small intestinal biopsy is the definitive confirmatory test for celiac disease.
Conclusions:
- Positive blood test results for celiac disease necessitate further confirmation.
- Endoscopic small intestinal biopsy is recommended to confirm celiac disease diagnosis prior to dietary changes.
Objective:
To provide recommendations for the management of patients who inquire about the Health Canada-approved, self-administered home blood tests for celiac disease or who present with positive test results after using the self-testing kit
Sources Of Information:
PubMed and the Cochrane Database of Systematic Reviews were searched from January 1985 to April 2008, using the subject headings diagnosis of celiac disease and management or treatment of celiac disease. Guidelines for serologic testing and confirmation of diagnosis of celiac disease by the American Gastroenterological Association and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition are used in this review. Level 1 evidence was used.
Main Message:
Although blood tests are helpful for screening purposes, the confirmatory test for celiac disease is a small intestinal biopsy.
Conclusion:
Patients whose blood tests for celiac disease provide positive results should have endoscopic small intestinal biopsies to confirm the diagnosis before starting a gluten-free diet.
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