Skip to content

: Endoscopic Procedure of the Stomach (Upper Gastrointestinal Endoscopy)

Published: August 9, 2026Updated: August 16, 2026

: An upper endoscopy is a procedure in which a thin, flexible tube with a camera is passed through the mouth to look at the esophagus, stomach, and first part of the small intestine. It lets your doctor inspect the lining of your stomach directly and take small samples if needed.

Quick summary

[": Upper endoscopy lets your doctor look directly inside your stomach and take tissue samples during the same procedure."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
111946-0
Short code
Endoscopic proc Stom Endscpy
Synonyms
Endoscopic proc Stom Endscpy
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
endoscopy
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

: What the Procedure Does

: The endoscope is a long, flexible tube with a light and camera at its tip. Your doctor guides it through your mouth and down into your stomach. The camera sends images to a monitor so the lining of your stomach can be examined for irritation, ulcers, growths, or other abnormalities.

: How to Prepare

: You will usually be asked to stop eating and drinking for several hours before the test so your stomach is empty. Tell your care team about all medicines you take, especially blood thinners, and about any allergies. You may be given sedation to keep you comfortable, so arrange for someone to drive you home afterward.

: What to Expect During and After

: The procedure typically takes a short time. With sedation you may feel relaxed or sleepy, and you may have a mild sore throat afterward. Most people can go home the same day once the sedative wears off and are advised to rest and resume eating gradually as directed.

: Biopsy and Results

: If your doctor sees an area that needs closer study, small tissue samples (biopsies) can be collected painlessly during the procedure. These samples are sent to a laboratory, and results are usually available within days to a couple of weeks. Your care team will explain what was found and any next steps.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

: EGD

Frequently asked questions

: Will the procedure hurt?
: Most people do not feel pain during the procedure, especially with sedation. You may notice pressure or a mild sore throat afterward. Talk with your care team about comfort options before the test.
: How long does it take to get results?
: If tissue samples are taken, results are usually available within days to about two weeks, depending on the laboratory. Your care team will discuss the findings and any needed follow-up with you.
: When can I eat normally again?
: Your care team will give you specific instructions. Many people can start with clear liquids and gradually return to normal eating the same day once the sedation has worn off, but follow the guidance given to you.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy