Nasogastric intubation may be performed for diagnostic or therapeutic indications.15 The primary indication for NG intubation is to aspirate stomach contents. It is used to evaluate the presence, rapidity, and volume of an upper gastrointestinal hemorrhage. However, unless the aspirate is grossly bloody, detection of blood may be unreliable. The fecal Hemoccult card should not be used to test for occult blood in gastric aspirates, as it may be accurate. The Gastroccult card uses a developer that neutralizes gastric acid, rendering it able to detect hemoglobin.11 A NG tube may be inserted to instill air into the stomach to assess for an intraperitoneal perforation. Gastric fluid and contents may be aspirated for laboratory analysis. It may also be placed to visualize the stomach on chest radiography to assess for a diaphragmatic hernia. A NG tube is placed in patients for medication administration, relief of a bowel obstruction, treatment of recurrent vomiting, administration of oral contrast for diagnostic imaging, and to perform gastric lavage. They are placed to decompress the stomach preoperatively, postintubation, prior to a diagnostic peritoneal lavage, or prior to a pericardiocentesis.