Many patients ask one common question before a CT scan:
Do I need to fast
The answer depends on the type of CT scan you are having.
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In this guide, we explain when fasting is required and when it is not.
A CT (Computed Tomography) scan is an imaging test that creates detailed pictures of the inside of the body.
It helps doctors diagnose:
Infections
Injuries
Tumors
Internal bleeding
Organ problems
The procedure is quick and painless.
Fasting depends on whether contrast dye will be used.
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You can eat and drink normally unless your doctor advises otherwise.
Non-contrast scans are commonly done for:
Brain scans
Kidney stones
Bone injuries
Lung evaluation
Fasting is usually required.
Doctors may ask you to avoid food for 4 to 6 hours before the scan.
This helps:
Prevent nausea
Reduce risk of vomiting
Improve image quality
You may still be allowed to drink water.
Always follow your diagnostic centre’s instructions.
Contrast dye is injected into a vein.
Some patients may feel mild nausea.
An empty stomach reduces discomfort.
It also lowers the risk of complications.
Before a contrast CT scan, tell your doctor if you:
Have diabetes
Have kidney disease
Are pregnant
Have thyroid problems
Have a history of contrast allergy
This ensures safety during the procedure.
If you eat before a contrast CT:
Inform the diagnostic centre immediately
The scan may be delayed
The doctor may reschedule the test
Do not hide this information.
Your safety is important.
The cost of a CT scan in Mumbai usually ranges between:
?2,000 to ?12,000
The price depends on:
Body part scanned
Contrast or non-contrast
Diagnostic centre location
Machine technology
Always confirm fasting instructions while booking your appointment.
Fasting before a CT scan depends on the type of scan.
Non-contrast scans usually do not require fasting.
Contrast CT scans often require 4 to 6 hours of fasting.
Always follow your doctor’s advice for accurate and safe results.
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