I had the same test done with my last child. It's no big deal. Don't worry about what you do or don't eat in the days before the test. Just be sure to fast after midnight. The carbs/sugar thing is probably to see (as someone mentioned earlier) if your body can tolerate the worst case scenario...binge eating! However, any manipulation of diet either way, binging or starving, will skew the test and then you don't know if it's right or wrong. So just eat the way you normally would. What do you normally eat for dinner? Eat that. Then nothing after midnight, not even water, because that can make your body start producing insulin, too, thinking that it's going to be getting some nutrition. By the way, I hate to burst your bubble, but 3 hour glucose tolerance tests usually are venous blood draws, not fingersticks. It may be different where you are, but a blood draw is the standard. Still no biggee. Just roll with it. Also, they don't usually make you sit there and wait the entire time. You have an hour in between each stick and they should let you go run errands or whatever in between as long as you're back in an hour. If you'd rather just sit there and veg out, more power to you. But usually you can get out and about if you'd rather. And yes, eating probably did skew your original random blood test, but 179 is still high for a random test even after eating, so prepare yourself for the possibility of dealing with Gestational Diabetes. Again, not the end of the world, and all will go back to normal after delivery. Take it in stride. We're women, we're tough. If our ancestors could do it and live through it without the conveniences and medical knowledge we have now, we can do it even better! Anyway, you're more than 1/2 way there, so you would only have to deal with it for 15 weeks...yeesh, that's just a tick in time! Good luck, God bless, and, as Castanza's father says on Seinfeld...."serenity now!"