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CT with contrast
Why contrast is used, what you may feel, and what to tell us beforehand.
In short
Share allergies and kidney history · Follow any fasting advice given · Drink water afterwards if advised
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01
Before your visit
Tell us about allergies, kidney disease, diabetes or metformin use.
Follow fasting instructions if your confirmation includes them.
02
On the day
A small cannula may be placed in your arm.
You may feel warmth or a metallic taste for a few seconds as contrast is given.
The scan takes only a few minutes.
03
Afterwards
Drink plenty of water unless told otherwise.
Tell us or your doctor if you notice a rash or swelling.
Before you arrive
Safety screening
Previous reaction to contrast
Kidney disease
Diabetes / metformin
Pregnancy
Checklist
What to bring
Your referral
Recent kidney blood test results, if requested
A list of medications
Common questions
Is contrast always needed?
No. Your radiologist decides whether contrast will improve the images for your clinical question.
Sample guidance for template purposes. Always follow the instructions in your booking confirmation and from your clinician.
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