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% and specificity 89%.

No specific training is required to use Peptest but it is designed for use by healthcare professionals. Peptest kits can be ordered for use in your facility and we also invite researchers to our laboratory for pepsin diagnostics. 

Peptest conforms to the European Directive 98/79/EC on in-vitro Diagnostic Medical Devices, which is shown by the CE mark of conformity.

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 can be used to detect and measure pepsin in a wide range of clinical samples including:

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

The lateral flow device contains two types of unique antibodies – one is tagged with a colorimetric marker and becomes soluble on application of a test sample. The other antibody is found in a nitrocellulose membrane, at the test line.

Any pepsin in the sample is bound at the test line by the two antibodies and a coloured line is seen 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.

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

The test specific data is transferred wirelessly by radio-frequency identification (RFID) before each measurement and can be stored internally.

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

The measurement data can also be extracted via USB using a special USB cable and the Peptest Cube Reader Software. The device is powered by battery 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


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