Preparation for a PET scan will vary according to the type of scan being performed. Hence, you must prepare correctly for the imaging test. However, the following are some instructions given for all types of PET scan:
Follow a limited carbohydrate diet for 24 hours before the scan.
Do not eat or drink anything six hours before the test, except water.
Drink as much water as you can until you reach the diagnostic centre or the hospital.
Contact your insurance company to know if it will pay for the scan. Find out if any approval or pre-authorization is required.
Dress comfortably for the scan. However, you will be asked to change into a hospital gown.
Do not carry any valuables like jewellery or a watch, leave them at home.
Do not perform any strenuous exercises or activities 48 hours before your test.
Prepare your music and device to help you relax during the test, only if approved by your doctor.
Do not take anything that contains metal to your test, such as dentures, eyeglasses, or hearing aids.
Take routine medications as instructed.
Carry the copies of previous PET CT scans, any recent CT scans or MRI’s done for comparison.
If diabetic, monitor and control your blood sugar levels carefully 48 hours before the test.
Take your diabetes medication at least four hours before the exam as instructed.
Reach the centre or hospital 15-30 minutes before your scan.
Your identity and the exam scheduled will be verified by a technologist.
You may be asked to complete a screening form.
Your doctor may order some lab tests before the contrast is given.

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