The breath test is to check for a carbohydrate problem--which would be lactase I am guessing. Everything that I have read points to lactose--lactase, but he specifically said Carbs---I know they break down and such---This will be a fasting test---and it will take I think 3 hours to get it done. We go in--they check her--then we drink a solution--then they check her over the next couple of hours. We will get those results that day.
Heather
This test sounds just like the Oral Glucose Test. My son has gotten this test done once a year for the last three years. This test checks the blood sugar level.