Celiac Sprue- Evolution of Diagnostic Tests
•Ancient times - clinical observation
•1950-1960’s - response to gluten free diet, 72-hr                                    fecal fat, low xylose test, origins of SB biopsy
•1970’s - Anti-gluten Ab in blood / intestinal fluid
•1980’s - Antigliadin / antiendomysial Ab in blood
•1990’s - Antitissue transglutaminse Ab
•   Mistakenly thought to rule in and rule out all disease
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