REFLUX TESTING

The gastroesophageal reflux test accurately detects the presence and determines the extent and severity of gastroesophageal reflux disease.

This non-invasive nuclear medicine imaging technique precisely identifies contamination of reflux fluid throughout the maxillary sinuses, throat, middle ears, laryngopharynx, airways and lungs.

The test also plays an integral role in predicting the outcome of laparoscopic anti-reflux surgery and minimising the risk of unsuccessful surgery.

 Your GP or specialist may refer you for this test if you are suffering from:

  • Heartburn
  • Cough
  • Chest pain
  • Throat clearing
  • Difficulty swallowing
  • Recurrent chest, throat and/or ear infections
  • Sinusitis
  • Pneumonia
  • Bronchitis
  • New or worsening asthma
  • Disrupted sleep

You are required to fast for 4 hours prior to your examination. Please do not have anything to eat, drink, smoke or chew during the fasting period. All medications (including prescribed reflux medication) must be taken on the day of your examination prior to commencing the 4 hour fasting period.

Gaviscon must NOT be taken on the day of your appointment.

The test is performed in two stages.

Stage One

The Nuclear Medicine Technologist will give you approximately 150mL of water to drink. A small amount of a radioactive tracer is placed into the water to enable us to see the transit of the water with our imaging equipment. 35 minutes of imaging will commence after consuming the water.

Stage Two

Following a 90-minute break, a further 25 minutes of imaging will be performed.

You are free to leave the department. Your results will be sent to your referring health professional.

  • Your original referral or request form
  • Medicare and any Government concession pension or health care cards
  • Previous relevant imaging

Yes, but in most cases, we do not perform nuclear medicine procedures on pregnant women, unless a medical benefit outweighs any potential risks.


Breastfeeding mothers may continue breastfeeding following the scan.

Reflux testing is available at the following X-Ray & Imaging locations