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Hello, I’m Professor Peter Dettmar

I have spent many years studying Reflux and the problems patients and doctors have in diagnosing it.

Reflux diagnosis typically entails several tests, such as 24/48 hour pH monitoring, impedance Testing, Barium Swallow, and Endoscopy, to establish whether Reflux is the problem. All expensive, invasive, time consuming and unpleasant for the patient.

I have developed Peptest to solve that problem.


Professor Peter Dettmar


What is Peptest™

Peptest is a new, accurate, painless and inexpensive saliva test that tells you conclusively if you have reflux. Peptest can be ordered by both doctors and patients direct.

Your body produces Pepsin in the stomach to break down protein. If Pepsin is found outside of the stomach you are suffering from Reflux.

We take samples of your saliva and test them in our laboratory for Pepsin.

If Pepsin is present the concentration in your sample is measured to show the severity of Reflux and give a benchmark to assess the success or failure of any treatment. Retesting can be used at any future treatment point.

What is Reflux?

Simply put, Reflux is the contents of the stomach (Acid, Pepsin & Bile) escaping through a valve at the top of the stomach and up into the oesophagus and even into the airways causing a variety of symptoms.

There are many causes including poor diet, too much alcohol, use of certain pain killing drugs, stress and general lifestyle. Learn more about reflux >

What are the symptoms of Reflux?

Gastroesophageal Reflux Disease or GORD is known for causing heartburn and regurgitation but when it reaches the throat and beyond it is referred to as Laryngopharyngeal Reflux (LPR) or Airway Reflux causing Sore Throat, Chronic Cough, A feeling of a lump in the throat, Post Nasal Drip, Persistent Throat Clearing, Voice Changes, Hoarseness, Asthma, Earache, and the loss of dental enamel.

How dangerous is Reflux?

Without early diagnosis and treatment Reflux can, in time, lead to damage to the Oesophagus (erosive oesophagitis) and a condition called Barrett’s Oesophagus that in some cases leads to Oesophageal cancer. In certain cases it is also responsible for cancer of the Larynx.

Learn more about reflux >

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What do doctors and patients say about Peptest?

View all People using Peptest™ >


"I find Peptest to be a valuable tool to confirm non acid reflux as causing cough in my patients with asthma, COPD and isolated chronic cough."

Professor Alyn H. Morice, Professor of Respiratory Medicine Head of Division of Cardiovascular & Respiratory Studies


"The test is easy to use and the results extremely quick. The Manufacturers are helpful and easy to contact."

Sian Christmas, Group Solicitor at Henry Boot plc UK


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Alternatively email or call us on 01482 461 880. Three small collection tubes and instructions will be sent to you by post within 5 working days.

You collect 3 small saliva samples over 1 or 2 days and send them back in a pre-paid envelope. We email or post your results back in 48 hours.

For more information and self-help regarding Reflux, click hereOr follow us on Facebook –

Most read
Peptest™ resources

> Diagnosis of Reflux Disease using Pepsin as a Marker

> Pepsin – The Aggressor

> Reflux Revisited: Advancing the Role of Pepsin

> Use of non-invasive pepsin diagnostic