Anybody here had a PET Scan?

I haven't had one but found this http://www.nhs.uk/Conditions/PET-scan/Pages/Introduction.aspx The glucose wouldn't last long in your body anyway so I wouldn't worry about it.

Yes, you need to fast for at least 6 hours, also your bg level must be below 10. A pet scan is to detect tumours by absorbing radioactive glucose, the absorption will be compromised if bg is not below 10 and any tumour may not show up. If you are a type 1 the last fast acting insulin has to be for the food you eat before fasting. You cannot take correction doses until after the scan. The amount of glucose that is injected is very small. Hope this helps.