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Gastro+ Gastrolyzer breath monitor

Breath hydrogen monitoring to aid in the detection of gastrointestinal disorders

What is it?

Helping to detect gastrointestinal disorders, the Gastro+ is a portable hand-held hydrogen breath test. It is designed for health care proffessionals to aid in the detection of gastrointestinal disorders. It can be used as a lactose intolerance test, and to aid in the diagnosis of a variety of gastrointestinal disorders such as fructose intolerance and intestinal bacteria overgrowth.

The new Gastro+ features built in suggested protocols with automatic alerts making it easy to test multiple patients with different possible gastrintestinal disorders in one sitting, saving gastroenterologist, nurses and doctors a lot of time. 

Breath testing with the Gastro+ for gastrointestinal disorders is clinically proven and is being used by many health proffessionlas already, its simple, non-invasive and low cost.

Ask us for a FREE demo of the Gastro+ today.

Gastro+ Gastrolyzer breath monitor

Why Gastro+™?

The Gastro+ offers a portable system for all your hydrogen breath testing (HBT) needs and offers an alternative option to the GastroCH4ECK®.
Using the Gastro+ aids in the detection of gastrointestinal disorders such as lactose intolerance and fructose intolerance with a simple breath test.

Why is it important?

Hydrogen Breath Testing (HBT)

HBT is a non-invasive, sensitive and specific means of diagnosing small bowel sugar malabsorption. They make use of gut bacteria’s ability to digest sugars and convert these to hydrogen, which is then absorbed into the blood and can be measured in exhaled breath.

The test is commonly used in paediatric and adult gastroenterology departments to diagnose malabsorption of the sugars lactose, fructose and sucrose. It is also used to investigate small intestinal bacterial overgrowth (SIBO).

The Gastrolyzer® range is world renowned for delivering accurate hydrogen breath testing, cited by clinical leaders in gastroenterology, such as Robert Heuschkel and Way Seah Lee.

Benefit for the user

The Gastro+™ is easy-to-use and a non-invasive breath hydrogen monitor, with two sampling modes and a colour touch screen.

The monitor is quick and easy use, with visual prompts for patients whilst taking a test to ensure correct results every time.

The Gastro+ requires 3 AA batteries, making it totally portable and easy to transport.

The monitor has built in SteriTouch technology to ensure optimum infection control.

There are two sampling modes to enable the use of breath hydrogen testing for patients of all ages.

Facemask sampling system - this sampling system is recommended for use with younger or older patients who are unable to co-operate with the test. The Gastro+ is attached to a facemask, which is then placed over the mouth and nose of the patient. Once ‘Facemask’ mode is selected the Gastro+ will take a real-time reading until the operator is happy the reading is correct. 

The new Gastro+ has built in suggested protocols for SIBO, Lactose intolerance, lactulose with alarms alerting patients when to take their next breath test, with the multiple patient setting you can test up to 10 patients in one sitting and store up to 100 patient profiles on the Gastro+.

The readings stored on the Gastro+ can be downloaded to the GastroCHART™ database which comes FREE with every Gastro+.

Gastrolyzer® range of hydrogen and methane breath monitors

A video introduction to our hydrogen and methane breath test monitors. To aid in the detection of gastrointestinal disorders such as lactose intolerance and fructose intolerance.

How to use Gastrolyzer® breath bags

This is a simple illustrative demonstration of how to use the Gastrolyzer® breath bags. 

Gastro+ Consumables

SteriBreath™ mouthpieces

SteriBreath™ mouthpieces for use with Bedfont® breath analysis monitors, combining ease of use with optimum infection control.


The D-piece™ incorporates a one-way valve to prevent air being drawn back from the monitor. The breath then passes through an infection control filter, proven to remove and trap >99.9% of airborne bacteria.

Face mask sampling system

This sampling system is single patent use and allows the patient to breath normally through a face mask in order to produce a breath sample.

Adult face mask

Suitable for using with adults.

Medium face mask

Suitable for using with adolescent.

Infant face mask

Suitable for using with infants.

Cleaning wipes

Free from alcohol, ensuring the continued performance of your monitor. Pack contains 50 wipes.

Calibration gas for Gastro+™

The Gastro+™ requires calibration once per month using 100ppm H2 gas, the calibration kit contans 100ppm H2 gas, 1 x calibration adapter and 1 x regulator.

Product specification

Concentration range
0-500ppm hydrogen (H2)
Full colour touchscreen
Detection principle
Electrochemical sensor
Accuracy (repeatability of reading)
< 10%
Carbon monoxide cross-sensitivity
< 1%
3 x AA (LR6 or equivalent) alkaline batt
Response time
Typically < 45 seconds
Operating temperature range
15-35oC (Storage 0-50oC)
Operating humidity
10-90% (Storage 0-95%) non-condensing
Sensor operating life
2 years
Sensor sensitivity
Approx. 34 x 75 x 140 mm
Approx. 200g including batteries
Construction: Case
Polycarbonate/ABS blend, SteriTouch® anti-Microbial additive, D-piece: Polypropylene
Construction: D-piece

Gastro+™ downloads

Please click on the links to the right to view product information and manuals.

Clinical papers

Please click on the links to the right to view all the clinical papers.


1. Health Protection Agency (HPA), Porton Down, Report No 43/06, pp. 10-11 

Where can I buy?

If you would like more information or would like to purchase one of our monitors please select the country you are in on the right hand side. A full list of distributors in your area will be displayed.