Upper GI and small bowel series

Table of Contents

Alternative Names

GI series; Barium swallow x-ray; Upper GI series


What the risks are

There is low radiation exposure, which carries a very small risk of cancer. X-rays are monitored and regulated to provide the minimum amount of radiation exposure needed to produce the image. Most experts feel that the risk is low compared with the benefits.

Pregnant women should usually not have this test. Children are more sensitive to the risks of x-rays.

Barium may cause constipation. Consult your health care provider if the barium has not passed through your system by 2 or 3 days after the exam.


Special considerations

The upper GI series should be done after other x-ray procedures, because the barium that remains in the body may block details in other imaging tests.



Review Date: 11/08/2010
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)