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Lactose Intolerance & Lactose Malabsorption Breath Test
Our laboratory offers a simple process to gather the necessary data. After ingesting a lactose solution, the patient provides breath samples every 60 minutes over a 3-hour time period. Samples are then mailed to the laboratory. Analysis of the samples yields data on hydrogen and/or methane production during the digestive process. Test data provides key indicators of the existence/extent of lactose intolerance/malabsorption.
- Lactose intolerance breath test instructions
- Sample lactose intolerance breath test report
- FAQ's for patients
- FAQ's for physicians
How to tell if you are lactose intolerant
If you have nausea, stomach cramps, gas, bloating, or diarrhea within 15 minutes to several hours after eating or drinking diary foods, you may want to contact your doctor to determine if you have lactose intolerance.
Lactose levels in foods
Dairy product |
Lactose Content |
Yogurt, plain, low-fat, 240mL |
5g |
Milk, reduced fat, 240mL |
11g |
Swiss cheese, 28g |
1g |
Ice cream, 120mL |
6g |
Cottage cheese, 120mL |
2–3g |
Hydrogen breath test
Our breath test measures both hydrogen and methane production as the digestive process proceeds. Accurate analysis of these gases can be used to assist in the diagnosis of several conditions that can cause gastrointestinal symptoms, such as...
more about hydrogen breath test 

