Description of test Sit upright. A flexible, lubricated tube is passed through your nose. Bend your neck slightly forward, and swallow the tube when it advances to the back of your throat. After you swallow, the tube passes through the esophagus into the stomach. Stomach contents are suctioned into a sterile collecting container.
Tube is withdrawn.
Stomach contents are sent to the laboratory for analysis. After the test Immediate post-test care Do not blow your nose for 4 to 6 hours, to prevent bleeding. Activity after test Resume taking any medications that were withheld before the test. Return to pretest activities right away. Resume normal diet.