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Upper Endoscopy (EGD)

An upper endoscopy, also called EGD, is a procedure that allows a gastroenterologist to examine the esophagus, stomach, and first part of the small intestine. It can help evaluate reflux, swallowing problems, upper abdominal pain, nausea, vomiting, anemia, ulcers, bleeding, and tissue changes.

Medically Reviewed by Dr. Bharat Pothuri, MD, FACG | Updated 05-20-2026

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Esophagus Biopsy Upper GI Care

What Is an Upper Endoscopy?

An upper endoscopy is a diagnostic procedure that uses a thin, flexible tube with a camera to look inside the upper digestive tract. The doctor gently guides the scope through the mouth to examine the esophagus, stomach, and duodenum.

EGD may be recommended when symptoms cannot be fully explained by physical exam, blood work, imaging, or medication response alone.

Understanding EGD

Upper endoscopy gives your GI doctor a direct view of the upper digestive lining. If inflammation, ulcers, narrowing, bleeding, or abnormal tissue is seen, biopsies may be taken when appropriate.

Why Is an EGD Done?

An EGD may be done to evaluate upper digestive symptoms, identify lining changes, and guide the next step in care.

Ongoing heartburn or reflux

EGD can help check for esophagitis, narrowing, Barrett’s changes, or other reflux-related concerns.

Difficulty swallowing

Food sticking, swallowing discomfort, rings, strictures, or narrowing may need direct evaluation.

Upper abdominal pain

Upper pain may be linked to gastritis, ulcers, inflammation, or other upper GI conditions.

Nausea or vomiting

Persistent nausea or vomiting may need evaluation when symptoms keep returning or worsen.

Anemia or possible bleeding

EGD may help look for upper GI bleeding sources, ulcers, or abnormal tissue changes.

Biopsy or monitoring needs

Biopsies can help evaluate inflammation, celiac-related changes, H. pylori, Barrett’s esophagus, or other findings.

What Can an Upper Endoscopy Detect?

EGD gives your doctor a detailed view of the upper digestive lining and can help identify several upper GI concerns.

Esophagitis

Inflammation or irritation in the esophagus may be related to reflux, infection, medication injury, or other causes.

Barrett’s esophagus

Long-standing reflux may lead to lining changes that need biopsy and monitoring when clinically appropriate.

Gastritis or ulcers

EGD can show stomach inflammation, ulcers, erosions, bleeding points, or areas that may need tissue testing.

Narrowing or strictures

Swallowing symptoms may be linked to narrowing, rings, strictures, or other structural changes.

Bleeding sources

The procedure may help locate ulcers, irritation, or abnormal tissue that could contribute to bleeding or anemia.

Abnormal tissue

If needed, tissue samples may be taken and sent to the lab to guide diagnosis and next steps.

Who May Need an EGD?

Your doctor may recommend upper endoscopy based on symptoms, risk factors, medication response, blood work, known conditions, or warning signs.

Persistent reflux symptoms

Reflux that does not improve as expected may need specialist evaluation.

Trouble swallowing

Difficulty swallowing or food sticking should be reviewed promptly.

Possible bleeding

Vomiting blood, black stools, or unexplained anemia may require evaluation.

Unexplained weight loss

Weight loss with upper digestive symptoms should not be ignored.

Known Barrett’s esophagus

Some patients need monitoring based on previous findings and risk.

Persistent upper abdominal discomfort

Ongoing upper abdominal symptoms may need upper GI review.

Is EGD Only for Reflux?

No. EGD is often used for reflux evaluation, but it can also help assess ulcers, swallowing problems, bleeding, anemia, inflammation, stomach pain, and tissue changes that may need biopsy.

When Should You Talk to a GI Specialist?

Talk to a gastroenterologist if upper digestive symptoms continue, return often, interfere with eating, or occur with warning signs such as trouble swallowing, vomiting blood, black stools, or unexplained weight loss.

Related Upper GI Guides

Use these next-step pages when you are ready to understand preparation, scheduling, or related upper digestive conditions.

What to Expect

Learn about fasting, sedation, procedure day, recovery, and results.

View what to expect

Schedule Upper Endoscopy

Review appointment, location, insurance, and scheduling details.

Schedule upper endoscopy

GERD

Learn how reflux symptoms are evaluated and when EGD may be considered.

Learn about GERD

Barrett’s Esophagus

Understand why some reflux-related lining changes need monitoring.

Learn about Barrett’s esophagus

Difficulty Swallowing

Review when swallowing symptoms may need upper GI evaluation.

Learn about swallowing symptoms

Heartburn

Learn when recurring heartburn may need GI review.

Learn about heartburn

Upper Endoscopy Prep Overview

Quick Answer: What should adults know about EGD prep?

Upper endoscopy preparation usually involves fasting, medication review, sedation planning, and transportation planning. This overview helps explain why preparation matters and what your GastroDoxs care team may review before your procedure.

Upper Endoscopy Video Instructions

Watch this overview, then follow the instructions from your GastroDoxs care team for fasting, medication guidance, arrival time, and transportation planning.

Frequently Asked Questions

What is an EGD used for?

EGD is used to examine the esophagus, stomach, and duodenum. It may help evaluate reflux, ulcers, swallowing problems, bleeding, inflammation, anemia, or abnormal tissue changes.

Is upper endoscopy the same as EGD?

Yes. Upper endoscopy and EGD usually refer to the same procedure. EGD stands for esophagogastroduodenoscopy.

Can biopsies be taken during an EGD?

Yes. Small tissue samples may be taken during the procedure if the doctor sees inflammation, abnormal tissue, or a condition that needs lab review.

Do I need a ride after an EGD?

If sedation is used, you need a responsible adult to drive you home. You should not drive yourself after the procedure.

When should I ask a GI doctor about EGD?

Ask a GI doctor about EGD if reflux, swallowing problems, upper abdominal pain, nausea, vomiting, anemia, or bleeding symptoms are persistent or concerning.