Gastroscopy in Christchurch
A gastroscopy uses a thin, flexible telescope to look directly at the lining of your upper digestive tract. It is the most accurate way to find the cause of symptoms like persistent heartburn, swallowing issues, or upper abdominal pain.
Gastroscopy is commonly used to investigate symptoms such as persistent reflux, upper abdominal pain, difficulty swallowing, or unexplained nausea.
What to Expect During a Gastroscopy
Preparation
You simply need an empty stomach for a clear view. Stop all food 6 hours before your appointment; you may have clear water up to 2 hours prior.
Procedure
The procedure usually takes 10–15 minutes. We use a throat spray and light sedation to ensure you stay relaxed throughout.
Recovery & Results
Rest in our comfortable ward for about an hour with a light snack and review with your specialist. You must have a friend or family member to drive you home and stay with you.
Gastroscopy FAQs
Do I need a referral for a gastroscopy?
A referral from your GP or specialist is required to ensure the procedure is clinically appropriate for your needs. Once we receive your referral, we will contact you to book your appointment; for any other questions, please contact us here.
When is a gastroscopy recommended?
t is used to investigate ongoing symptoms or monitor known conditions like ulcers, Gastritis, or Coeliac disease. During the procedure, we can take tiny, painless tissue samples (biopsies) for closer examination.
Is a gastroscopy uncomfortable?
Most patients choose "conscious sedation," which makes you feel very sleepy and relaxed. While you remain conscious and able to breathe on your own, most patients remember very little of the 15-minute procedure afterward.
What should I do about my medications before a gastroscopy?
Most medications can be taken as usual with a small sip of water. However, it is essential to notify us at least a week in advance if you are taking blood-thinners (such as Warfarin, Clopidogrel, Dabigatran, Rivaroxaban, Apixaban) or if you are diabetic, as these will require specific adjustments.
Aspirin can be continued without interruption. If you take antacids or reflux medication, we will advise you whether to continue or pause these before the test to ensure the most accurate results.
What are the risks of a gastroscopy?
A gastroscopy is considered very safe, and serious complications are extremely rare. Minor side effects can include a temporary sore throat or a feeling of bloating from the CO2 used.
While rare, more significant risks include a reaction to the sedation, minor bleeding (especially if a biopsy is taken), or a small tear in the lining (perforation). Your specialist will discuss these with you in detail and answer any questions before the procedure begins.
Can I eat and drink after a gastroscopy?
You can usually eat and drink normally once the numbness in your throat has worn off, which typically takes about an hour. If you received sedation, you will need someone to drive you home and should rest for the remainder of the day.
When will I receive my biopsy results?
Biopsies are often obtained, and can be taken painlessly through the scope. These samples are then sent to a laboratory to check for conditions like H. pylori infections or coeliac disease. We will provide a preliminary explanation of the findings on the day. If biopsies were taken, the final laboratory processing can take around 1-2 weeks.
Who performs the procedure?
All procedures are performed by experienced gastroenterologist Dr Mehul Lamba in Christchurch.

