GI definition of GI by Medical dictionary
gastrointestinal [gas″tro-in-tes´tĭ-nal] pertaining to the stomach and intestine. gastrointestinal protein loss test administration of a radioisotope-labeled protein intravenously to determine the loss of plasma proteins in the gastrointestinal tract. Miller-Keane Encyclopedia and Dictionary of Medicine Nursing and Allied Health Seventh Edition ...
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