I haven't heard of always having a failed GCT then passing the GTT, When I failed the GCT I also failed the GTT, but only "borderline" coz with the last pg I had GD I was sent for the GTT at 19 weeks which I apparently passed, but OB wants me to repeat it again in another 4 weeks, ( 29) I thought I had a safe miss this time, but we'll have to wait another few weeks to see AGAIN!!!