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July 15, 1922


Author Affiliations


JAMA. 1922;79(3):216. doi:10.1001/jama.1922.26420030001012a

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The equivocal results in the use of Einhorn's thread test in the diagnosis of gastric ulcer and malignancy have been due in part to the difficulty in the recognition of the stains as blood. Though other objections have been advanced from time to time by various observers, it has appeared that modifications tending to render the test more sensitive would be of material aid in increasing the usefulness of the procedure. The outlining, by chemical methods, of the areas on the thread impregnated with blood, renders the identification of faint or doubtful blood stains less difficult. A method utilizing this principle has been used recently, and the results are sufficiently encouraging to warrant its trial as a source of added information in suspected lesions of the stomach and duodenum. The entire procedure is as follows:

The patient abstains from meat on the day the test is done, or for a

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