As long as you're taking antifungals, eating no-carb diets, etc., then overgrowth will be limited to your worst-case and most persistent areas. Stool, blood work, and oral thrush might be minimal.
The tests are meant to be done on people eating high-carbohydrate, zero-antifungal diets.
You really can't test for something you've structured your life around keeping under control and then have your test results compared to people who aren't. It's like getting blood glucose tested after an insulin injection!