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Upper Endoscopic Examination Limits (Visual Inspection of Esophagus/Gastrointestinal Tract)

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

This test involves a visual examination of your esophagus and upper gastrointestinal tract using an endoscope—a flexible tube with a camera. It helps assess for abnormalities like ulcers, inflammation, or signs of conditions such as gastroesophageal reflux or esophageal cancer.

Quick summary

["An endoscopic exam can help diagnose and monitor gastrointestinal issues during a procedure."]

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

Key facts at a glance

LOINC
19798-8
Short code
Limits of exam Endoscopy
Synonyms
Limits of exam Endoscopy
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 Is an Endoscopic Examination Used For?

Endoscopic examinations are primarily used to diagnose and evaluate conditions affecting the esophagus, stomach, and upper intestines. Common reasons include unexplained symptoms like persistent heartburn, difficulty swallowing, or unexplained weight loss, as well as screening for conditions like Barrett’s esophagus or early signs of cancer.

How Is This Procedure Performed?

The procedure is performed by a gastroenterologist or endoscopist. You’ll be given a mild sedative to relax, and a flexible tube (endoscope) will be inserted through your mouth into your esophagus. Images of your upper GI tract are captured and reviewed by a specialist during the procedure.

Preparation Before the Procedure

You may need to fast for a few hours before the exam, depending on the type of sedation used. Avoid smoking and heavy meals. Follow your healthcare provider’s specific instructions to ensure accuracy and safety.

What to Expect During Recovery

After the procedure, you may feel sore or have mild discomfort in your throat. You’ll need someone to drive you home if sedation was used. Avoid strenuous activities for the rest of the day and monitor for signs of infection or complications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long does an endoscopic exam take?
An endoscopic exam typically takes between 15 to 60 minutes, depending on the extent of the procedure and whether biopsies or other interventions are required.
Will I feel pain during the procedure?
You’ll likely feel mild discomfort or pressure during the insertion of the endoscope, but you’ll be sedated to minimize pain. Most patients describe it as a mild throat sensation, similar to having a long stick in your throat.
Can I eat or drink after the procedure?
You should avoid eating or drinking until fully recovered from sedation, which may take a few hours. Follow your healthcare provider’s instructions to prevent complications.
  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