i am a little confused about getting the glucose test now that i have spoken to two pathology centres. the first one said it was an 8 hour fasting test that takes 3 hours. i then rang a branch closer to home and they said no i dont have to fast and it takes one hour. on the doctors referral form it is written 'Glucose tolerance test' and she has hand written underneath it '1 hour'. can anyone shed some light about fasting or not. these are both sullivan and nicolades pathology centres but just different branches.