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Previous Volume 333:257-258 July 27, 1995 Number 4 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: In the review article by Donowitz et al. (March 16 issue),¹ there is no mention of measuring serum or red-cell folate, serum B₁₂, or autoantibodies in the evaluation of patients with chronic diarrhea. These tests are readily available and inexpensive, and the presence of a low concentration of red-cell folate or antiendomysial or antireticulin antibodies would alert the investigator to the possibility of celiac disease at an early stage. Folate deficiency is almost invariably present in patients with untreated celiac disease, and antiendomysial antibodies are present in 90 to 100 percent of them.^2,3 Furthermore, the concentrations . . . [Full Text of this Article]

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