When I did my one hour, it was not fasting, therefore if you ate anything high in carbs prior, your glucose
level may have been high. With
my last pregnancy
(only made it to 9 weeks), they I failed my one hour with over 200, took the 3 hour and passed that...I think being it was fasting. (They have me test early b/c my Mom had Gest. Diabetes)......The blood test is generally more accurate than a regular glucometer.....