Pepsin analysis

The Peptest kit is an immunological in-vitro diagnostic medical device that contains two pepsin monoclonal antibodies to identify pepsin in a clinical sample of saliva/ sputum quickly and easily. Peptest is a highly accurate diagnostic test with validated performance measures of sensitivity 95% as well as specificity 89%.

Peptest does not necessitate specific training; however, it is designed for utilisation by healthcare professionals and clinicians. Kits are available for order for use in your facility, and we also welcome researchers to our laboratory for pepsin diagnostics.

The CE mark of conformity demonstrates that Peptest complies with the European Directive 98/79/EC on in-vitro Diagnostic Medical Devices.

Peptest 50

Peptest: rapid immunological test for the quantitative analysis of pepsin

Peptest is a non-invasive and alternative first line test for conditions including GERD (gastroesophageal reflux), LPR (laryngopharyngeal reflux), chronic cough, cystic fibrosis, post-lung transplant rejection, asthma and sinusitus.

Clinical applications


      • Ear, Nose and Throat (ENT)
      • Respiratory
      • Gastroenterology

Peptest enables the detection and measurement of pepsin in a wide range of clinical samples, including:

        • Saliva
        • Sputum
        • Tracheal aspirate
        • Oesophageal aspiration
        • Gastric juice
        • Exhaled air condensate
        • Bronchoalveolar fluid

This lateral flow device includes two types of unique antibodies. One antibody, tagged with a colorimetric marker, becomes soluble upon the application of a test sample. The other antibody resides at the test line within a nitrocellulose membrane.

Any pepsin present in the sample binds at the test line via the two antibodies, resulting in a coloured line visible through the viewing window in the plastic case.

The Peptest Cube is suitable for use in the quantitative and qualitative evaluation of Pepsin measurement results. It will display the result of pepsin concentration directly in ng/ml in just three seconds.

Peptest Cube, weighing only 40g and with an edge length of 41mm, can function as a mobile handheld device or as a desktop measuring device remotely controlled via USB cable.

Before each measurement, the device wirelessly transfers the test-specific data using radio-frequency identification (RFID) and can also store it internally.

Every saved result includes a unique measurement ID, test name, lot number, distributor/manufacturer, and date and time.

You can extract the measurement data via USB using a special USB cable and the Peptest Cube Reader Software. The device operates on battery power but can also be powered via USB.

Peptest Cube Reader

Instructions for using Peptest

Thank you for your interest in Peptest. To arrange a demonstration or for more information, please get in touch.


Peptest™ is a single use in-vitro diagnostic device not for ingestion. It conforms to the European Directive 98/79/EC on in-vitro Diagnostic Medical Devices; this is shown by the CE mark of conformity.

Peptest™ kits are manufactured in the UK by RDBiomed Limited - a private limited company registered in England and Wales with number 06979218.

RDBiomed Limited
Daisy Building (2nd Floor)
Castle Hill Hospital
Castle Road
HU16 5JQ, UK

VAT Number: GB 990 1918 96


Sign up

Subscribe To Our Email Newsletter

Be the first to know about EXCLUSIVE discount offers and the latest research into reflux.

You have Successfully Subscribed!