Ongoing symptoms affecting your upper digestive system can be uncomfortable and worrying.
Many people live with heartburn, swallowing problems or abdominal discomfort for months before seeking advice, unsure about the cause of their symptoms or whether they’re something to be concerned about.
An upper gastrointestinal (GI) endoscopy is a commonly recommended investigation that helps doctors see what’s happening inside the oesophagus, stomach and the upper part of the small intestine.
This guide explains what an upper GI endoscopy is, why it might be recommended and how it helps investigate persistent upper digestive symptoms, so you can feel informed and confident if you’ve been asked to have one.
What is an upper GI endoscopy?
An upper GI endoscopy is a procedure that allows a doctor to look directly at the lining of your upper digestive tract. This includes the oesophagus, which carries food from your mouth to your stomach, the stomach and the first part of the small intestine, known as the duodenum.
The test is also called a gastroscopy.
It uses a thin, flexible tube called an endoscope, which has a small camera and light at the tip. The endoscope is passed through the mouth and into the upper digestive tract, with images shown on a screen so the area can be checked in real time.
An upper GI endoscopy doesn’t involve any cuts or surgery. It’s used to investigate symptoms and confirm or rule out conditions. For many people, it offers reassurance. For others, it helps identify a clear cause so treatment can be planned.
Why might an upper GI endoscopy be recommended?
An upper GI endoscopy may be recommended when symptoms affecting your upper digestive system aren’t settling, keep returning or don’t have a clear explanation. It helps your doctor understand why symptoms are ongoing and decide what, if any, further treatment is needed.
An upper GI endoscopy may be recommended to:
- Investigate symptoms that have lasted several weeks or longer
- Understand symptoms that are affecting comfort or daily life
- Rule out underlying causes when symptoms aren’t clear
- Check how well treatment is working
- Provide reassurance when symptoms persist
Symptoms that an upper GI endoscopy can help investigate
An upper GI endoscopy is used to investigate a range of upper digestive symptoms. These are often caused by common, treatable conditions, but seeing the lining of the digestive tract helps confirm the cause and decide what to do next.
Symptoms that may lead to an upper GI endoscopy include:
- Ongoing acid reflux or heartburn
- Difficulty or discomfort when swallowing
- Upper abdominal pain or persistent discomfort
- Frequent nausea or vomiting without a clear cause
- Chest discomfort linked to eating or digestion
- Feeling unusually full or bloated after small meals
Having these symptoms doesn’t necessarily mean there’s anything serious going on. In many cases, an endoscopy provides reassurance and helps ensure symptoms are managed more effectively.
What can an upper GI endoscopy diagnose?
An upper GI endoscopy helps doctors assess the lining of the upper digestive tract and identify a range of common conditions.
Conditions that an upper GI endoscopy can help diagnose include:
- Inflammation of the oesophagus or stomach
- Acid reflux
- Stomach or duodenal ulcers
- Narrowing of the oesophagus that may affect swallowing
- Hernia
- Signs of infection
In many cases, the results are reassuring. Even when a condition is identified, it’s often treatable with medication or straightforward next steps.
Is an upper GI endoscopy painful?
An upper GI endoscopy isn’t usually painful, though it can feel unfamiliar or slightly uncomfortable. To help with this, a numbing spray is used at the back of the throat to reduce the gag reflex.
Some people also choose light sedation, which helps them feel relaxed and drowsy during the procedure. You’ll still be able to breathe and respond, but many patients remember very little afterwards.
The team will prepare you for the endoscopy beforehand and ensure you know exactly what to expect. If you feel uncomfortable at any point, they can pause or adjust the procedure.
Do I need an upper GI endoscopy?
Not everyone with upper digestive symptoms will need an endoscopy.
You may be advised to have an upper GI endoscopy if:
- Your symptoms are persistent or worsening
- You’re having difficulty swallowing
- Acid reflux or heartburn isn’t improving
- Upper abdominal discomfort is affecting daily life
- Your doctor wants to rule out underlying causes
- Initial treatments haven’t helped
If an endoscopy has been suggested, it’s because getting a clearer picture will help guide next steps and give you confidence about how best to manage your symptoms.
Book an upper GI endoscopy with Mr Achal Khanna
If you’ve been advised to have an upper GI endoscopy or are concerned about ongoing digestive symptoms, you don’t have to wait for answers. A private endoscopy offers timely assessment, clear explanations and continuity of care.
Mr Achal Khanna is an experienced upper gastrointestinal surgeon who provides consultant-led endoscopy in a calm, private clinic setting. From your first consultation through to your results, you’ll be guided through each step with clarity and care.
To book an upper GI endoscopy in Milton Keynes or discuss your symptoms, contact our team today and take the next step towards reassurance and relief.