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PEDIATRICS Vol. 104 No. 1 July 1999, pp. 75-78

Comparative Analysis of Serologic Screening Tests for the Initial Diagnosis of Celiac Disease

Received Oct 14, 1998; accepted Jan 29, 1999.

Pierre A. Russo*, Lucie J. ChartrandDagger , and Ernest SeidmanDagger

From the * Department of Pathology and the Dagger  Department of Pediatrics, Gastroenterology Service, Hôpital Ste-Justine, and Université de Montréal, Montréal, Québec, Canada.

Objective.  To prospectively evaluate and compare the sensitivity, specificity, and positive and negative predictive values of serum antigliadin (AGA) and antiendomysium antibodies (EMA) in predicting the initial diagnosis of celiac disease.

Design.  Sera were tested prospectively for IgA and IgG AGA by enzymed-linked immunosorbent assay and IgA EMA by immunofluorescence techniques on monkey esophagus and human umbilical cord sections in 95 pediatric patients referred for duodenal biopsies.

Patients.  Ninety-five pediatric patients were referred for duodenal biopsies, with a clinical suspicion of celiac disease; 24 of those patients had celiac disease by criteria of the European Society for Pediatric Gastroenterology and Nutrition.

Setting.  A pediatric gastroenterology clinic of a tertiary care pediatric university hospital.

Results.  EMA testing on human umbilical cords was the most specific but was also the least sensitive. All the patients with biopsy-proven celiac disease were identified by either one or both serologic tests (100% combined sensitivity). The combination of AGA and EMA on monkey esophagus resulted in a negative predictive value of 100% accuracy.

Conclusions.  A combination of AGA and EMA tests resulted in 100% sensitivity and 100% negative predictive value, useful in selecting patients for duodenal biopsy.  Key words:  endomysial antibodies, gliadin antibodies, serologic screening, celiac disease.




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