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HelpTest Code OCC-G Occult Blood, Gastric Fluid
Methodology
Guaiac PaperPerforming Laboratory
Aspen Valley HospitalPhysician Office Specimen Requirements
0.5 mL of gastric aspirate by nasogastric intubation or vomitus in a screw-capped, plastic container. Forward promptly at ambient temperature. If there is a delay in transport of >24 hours, send specimen refrigerated in ≤5 days.Reference Values
NegativeNo interference by normal therapeutic concentrates of cimetidine (Tagamet®), iron, or copper salts.