Seems like the OGTT sounds so scary eh.. i will be doing it next month.. due to family history..This test is only ordered by gynae:
1) if you have a family history of diabetes
2) if you dont 'pass' the urine test (for sugar level) when you visit your gynae monthly.
3) Of course, they will request you to take the test at 28 weeks if your baby is too big as they will suspect iis gestational diabetes!!
My case was due to the 1st 2 reasons.
As for the fasting part, the trick is go for the 1st available appointment... say you eat your dinner at 7pm the night before.... by next day 8am when you reach hospital for the test it will be more than 12 hours... factor in the two 1 hours interval (drinking the glucose) and the blood taking, by the time you finish, it will be almost 11am... Starving !!!!!! so better to go earlier in the morning!!!! I bring bread along... the moment they draw the last tube of blood, i was stuffing my face with the roti... cos wanna faint already!!!
Yup, cannot drink water so I wet my lips whenever i feel thirsty!