Lactose Intolerance Testing

Stomach or gut issues impacting your day?

Lactose intolerance can ruin your day, affect your work, and damage your social life. Book your test today and get your lab-verified diagnosis so you can get certainty today and start to take control of your health.

a scientist holding a tube test at a laboratory

Get a lactose intolerance test today

Many people suffer from Irritable Bowel Syndrome (IBS), bloating, discomfort, and various other conditions for years without knowing the cause. Statistics show that nearly 70% of individuals are lactose intolerant to some degree. With modern technology, you can get tested with a simple, non-invasive breath test and get results that are more accurate than blood tests.

Our Lactose Breath Test Process


Register or order

Schedule your test online and complete a brief registration form. Alternatively, order a test for home use.



This test requires the patient to take nothing by mouth (NPO) for 12 hours, avoidance of certain foods for 24 hours, and no smoking for at least an hour.


Get tested

Commit at least three hours for your test. If you test at home, make sure to follow the instructions carefully, as it can affect the accuracy of the test.


Get results

Get results the same day for in-office visits or within a day after your test has been received for an at-home lactose intolerance test.

Many different conditions can look like lactose intolerance. Talk to your care provider about getting tested today.


How to Take a Gastro Breath Test

  • Schedule your test at one of our MA-based testing centers or purchase a lactose intolerance test kit for home testing.
  • Follow all instructions carefully, especially for an at-home lactose intolerance test. Failing to follow instructions for preparation and performing the test may affect accuracy of results.
  • The test is a breath test, so it is completely non-invasive.
  • Get results the same day, or send in your home test results for analysis by our experts. You will receive results typically within one day from when we receive your test.
  • Take control of your health. Get the best-in-class certainty you need so you can take the steps needed to improve your quality of life.

The AllClear Difference

  • Personalized tests when you need them
  • State of the art, best in class testing options
  • Test for lactose intolerance at home or in person

  • Easy-access online results
  • Testing for everyday life—work, home, and social events
  • Convenient city center testing locations

Our Boston Locations

Moving – New Location information Coming Soon!

Our Beverly Locations

900 Cummings Center, Suite 214U, Beverly, MA 01915


Frequently Asked Questions

The lactose intolerance breath test can have false negative results in certain situations, from 5% to 12%  of the time. However, the breath test is considerably more accurate than blood tests.

Talk to your care provider about next steps, particularly if your lactose intolerance has affected your work and your quality of life. Avoid foods with lactose and consider taking other tests to see if you have additional conditions that may be contributing to your symptoms.

If you think you may be lactose intolerant and are suffering from bloating, gas, nausea, abdominal cramps, or have been diagnosed with celiac disease or IBS, you are a good candidate for this test. Talk to your care provider about lactose intolerance testing options.

We also provide best-in-class COVID testing, 4-Plex (Covid, RSV, Flu A&B) testing, SIBO testing, Sucrose and Fructose sensitivity testing, and more.

Take a look at our home page for information on more testing options.