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July 24, 1909

Filter Paper Test for Bile in Gastric Contents

Author Affiliations

Tyler, Texas

JAMA. 1909;LIII(4):310. doi:10.1001/jama.1909.02550040062013

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To the Editor:  —Since the publication of my article entitled "A Delicate Test for Bile in the Gastric Contents," in The Journal, May 20, 1909, p. 1758, my attention has been called to Rosenbach's test for bile in the urine. This consists in filtering the urine several times through the same filter paper and applying nitrous acid to the filter paper after drying, to obtain the reaction for bile. I have never used the Rosenbach test for bile in the urine, but, working entirely independently of that method or other methods, I have found that the filter paper test for bile in gastric contents as described by me, will detect the presence of bile, when no reaction for bile will be obtained when nitrous acid is applied to the filtered gastric contents themselves.

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