Tests & Procedures

At Minnesota Gastroenterology, we know that patients and families want to know as much as possible about the test and/or procedure that is being recommended by a healthcare provider.  Refer to the list below to find the information that is most helpful to you.  If you still have questions, please contact us through our website Quick Links or call (612) 871-1145 to make an office appointment.


Lactose Breath Hydrogen Test

Lactose Breath Hydrogen Test Instructions

Lactose Breath Test by Quintron

Video: Your Lactose, Fructose or Glucose Breath Test Experience


What is a lactose breath hydrogen test?
This is test can determine if you have a problem digesting lactose products (i.e. milk, cheese, ice cream, etc.). Symptoms of lactose intolerance include diarrhea, gas, cramping, and bloating. When lactose is combined with the normal bacteria in the intestine, hydrogen gas is expired as you breathe. You will be asked to breathe into a series of breath collection devices and your breath will be collected and analyzed.

What are the possible complications?
This test is very safe. You may feel minor discomfort from diarrhea, gas, cramping or bloating.

What should I expect during my test?
First, a baseline breath sample will be obtained by breathing into the device. Then you will drink a lactose solution. After drinking the solution, you will wait 1 hour between each sample. Every hour for a 3-hour period, you will breathe into the device. You will collect a total of 4 samples.

What should I expect after my test?
Breath test samples must be returned/mailed within 3 days of collection. You will be able to resume your normal activities and diet. Your doctor will send you the results by mail in 9-12 days after your test is received.