Hi Mark
You were in hospital and presumably a bit stressed when having your blood taken?
This can often lead to the results being higher than normal.
If you are really worried you could maybe ask your doctor for an HbA1c test which will give you an indication of your blood sugar levels over the past 3 months and is what is used here in the UK for checking and diagnosis. It gives a far better idea of where you stand in regard to Diabetes than a solitary finger prick test which just shows where your blood sugar was at that exact moment.