Fasting requirements depend on the type of CT scan you're having:

CT scans that typically require fasting (4-6 hours):

• Abdominal CT scans

• Pelvic CT scans

• Any CT scan with oral contrast

• CT scans with IV contrast (to reduce nausea risk)

CT scans that usually don't require fasting:

• Head/brain CT

• Chest CT

• Limb or joint CT scans

• Emergency CT scans

During fasting period:

• No food or drinks except small sips of water for medications

• No chewing gum, sweets, or smoking

Special considerations:

• If you're diabetic, discuss medication timing with your doctor

• Continue essential medications with small amounts of water

• If you're having contrast, fasting helps prevent nausea

Important: You'll receive specific instructions when your scan is booked. Follow these carefully as they're tailored to your particular examination.