I'm wondering if I can get some insight into how I can best prepare for an upcoming blood test. My doctor wants to screen me for cholesterol and blood sugars, since I'm high risk (primary family members with these problems).

I'm particularly concerned about the fasting glucose test.

-How many grams of carb in that nasty stuff they make you drink?
-In order to avoid a huge sugar rush during/after testing, should I 'build myself up' by consuming more carbs than usual on the preceding couple of days? Should I increase to maybe 40-50 carbs (up from my usual 25 or so)?
-If increasing carbs for a few days is a good idea, I'm even toying with the idea of doing a 2-3 day 'reversal diet' as a stallbreaker, which could involve high carb, low fat (ugh), low-glycemic whole grains, beans, and veggies (ugh). Would this be a good idea, or would it throw my test off?
-Or should I just carry on eating low-carb as usual?

Any insights, info, or ideas gratefully accepted!

Rachel