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Evaluation of the Guaiac-Positive Patient

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Gastrointestinal Bleeding

Abstract

One of the more common encounters a physician must deal with is the presence of occult gastrointestinal blood loss. The prevalence may reach up to 1 in 20 adults. The detection of occult blood is important because a person may lose up to 150 ml of blood from the proximal gastrointestinal tract before producing overt melena [Schiff et al. Am J Med Sci 203:409, 1942]. Before proceeding further, an important distinction must be made between occult gastrointestinal blood loss and obscure gastrointestinal bleeding.

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Correspondence to Melissa Teitelman .

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Burbridge, R., Teitelman, M. (2016). Evaluation of the Guaiac-Positive Patient. In: Pryor, A., Pappas, T., Branch, M. (eds) Gastrointestinal Bleeding. Springer, Cham. https://doi.org/10.1007/978-3-319-40646-6_16

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  • DOI: https://doi.org/10.1007/978-3-319-40646-6_16

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