Can you have water before a CT scan with contrast?
If you are having an abdominal CT scan with oral contrast, you will be asked to drink a fairly large volume of the contrast prior to the study (as much as a liter/quart or more before the examination) so drinking a large amount of water beforehand will both make it more uncomfortable for you to drink the contrast and dilute the contrast you will drink.
Can I eat or drink before getting a CT scan?
Generally, there is no fasting requirement prior to a CT scan, unless a contrast dye is to be used. Your doctor will give you special instructions ahead of time if contrast is to be used and if you will need to withhold food and drink. Notify the technologist if you are pregnant or suspect you may be pregnant.
What is the drink they give you before a CT scan?
Thus it is important to drink all of the barium sulfate that is prescribed for a CT scan. The typical abdominal or pelvic CT scan appointment requires the patient to fast for three hours (or more) and arrive at least one hour ahead of the scheduled time to begin the experience that is the barium sulfate cocktail.
What is the stuff you drink before a CT scan?
This is required within 30 days prior to the CT examination for the following people:
- Patients who are age 70 years or older;
- Patients who are diabetic (insulin and non-insulin dependent types);
- Patients who have a history of renal insufficiency/renal masses/single kidney.