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Medical Term:

fluorescein string test


an infrequently used test in which a patient with gastrointestinal bleeding swallows a string; fluorescein is given intravenously; if the string fluoresces after removal, it has been contaminated by blood that has appeared since injection of the fluorescein; used to determine location of bleeding lesion.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.