Duodenal Endoscopic Cytology (for Cytologic Examination of Duodenal Mucosa)

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms like unexplained weight loss, persistent nausea, vomiting, or unexplained abdominal pain. It may also be used to investigate symptoms of gastrointestinal bleeding, unexplained anemia, or a family history of gastrointestinal cancers. Sometimes, it’s performed as part of an evaluation for conditions like celiac disease, Crohn’s disease, or other inflammatory bowel diseases.

How the Test Is Performed

You’ll likely be given a mild sedative to relax during the procedure. An endoscope—a thin, flexible tube with a light and camera—will be inserted through your mouth into your stomach and then into the duodenum. Cells from the mucosal lining are gently scraped or suctioned for analysis. The procedure usually takes about 15–30 minutes and may cause mild discomfort or cramping.

What to Expect After the Test

You may feel some bloating or mild discomfort for a few hours afterward. Avoid eating or drinking for a short time before the procedure, and follow any specific instructions your provider gives you, such as resting or taking pain relievers if needed. Most people return to normal activities within a day.

Sample Collection and Processing

The collected cells are sent to a lab for microscopic examination by a pathologist. They will look for abnormal cell shapes, patterns, or signs of inflammation, infection, or precancerous changes. Results are typically available within a few days to a week, depending on the lab.