An upper GI series is a series of x-rays of the esophagus, stomach, and small intestine (GI tract) that are taken after the patient drinks barium (contrast agent). The examination is useful in the diagnosis of ulcers and gastritis.
An upper GI series is a series of x-rays of the esophagus, stomach, and small intestine (GI tract) that are taken after the patient drinks barium (contrast agent). The examination is useful in the diagnosis of ulcers and gastritis.