Can I Drink Coffee Before Thyroid Scan?

Can I Drink Coffee Before Thyroid Scan? Can I drink coffee before thyroid scan? NO CAFFEINE FOR 24 HOURS prior to testing. This includes: Coffee, pop/soda, chocolate, cold medications, etc. ANY product that might contain caffeine. Nothing to eat or drink 4 -6 hours prior to your appointment time. Does a thyroid scan require fasting?