I had mine done at 25 weeks. It was 2 hours, blood drawn before taking the drink, an hour after and then 2 hours. It's not that bad, ask for fruit punch if they have it.
In Minnesota you take a drink and you wait an hour than they draw your blood and test the sugar. Usually it's done at 28 weeks
How do they do the glucose test? I'm 28 weeks and still haven't heard when ill have mine does everyone have one done?x