Yes. Keep glutening yourself until your testing is done. I recommend eating those foods that you'll have to say goodbye too - have a beer and an oreo for me.
I have heard ranges of 4-8 weeks of 1-4 slices of bread a day (or the equivalent). If you have been eating gluten (except for that last week) I would suggest 2 slices of bread a day; for those who have been off gluten, it's probably helpful, if not more painful, to eat more.
I would not start taking enzymes or supplements that will help your gut heal (like glutamine) until after your testing. Many of the blood tests are for detecting autoantibodies that appear in response to intestinal damage, so you want that damage there until testing is complete.
Good luck with your tests.