Top of the page
A lactose intolerance tests measure how well your intestines break down lactose, a type of sugar found in milk and other dairy products.
If you see a diabetes educator or diabetes specialist, contact them at least 1 week before your test to ask about adjusting your diabetes medicine or insulin.
Follow the instructions the gastroenterology (GI) Clinic gives you about when and what to eat or drink before the test. You'll have to drink liquid that has 26.3g of lactose for the test.
Test your blood sugar anytime you feel your blood sugar is low or high.
If you take insulin
The day before your test
*Be sure to bring a source of fast-acting sugar and your blood glucose meter with you.
After your test
If you take diabetes medicine other than insulin
To see this information online and learn more, visit MyHealth.Alberta.ca/Alberta/Pages/diabetes-hydrogen-breath-test-lactose-intolerance.aspx.
For 24/7 nurse advice and general health information call Health Link at 811.
Current as of: July 10, 2020
Author: Endocrinology and Metabolism Program, Alberta Health Services
Care instructions may be adapted by your healthcare provider. If you have questions about a medical condition or this instruction, talk with your doctor or appropriate healthcare provider.