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Sometimes, your child must go without food or drink before certain procedures, scans, or tests.
Not eating or drinking before a test is called fasting. You might also hear it called NPO, which is short for a Latin phrase that means “nothing by mouth."
Always follow the fasting guidelines or NPO instructions given by your care team.
There are several reasons your child may need to fast before a procedure or test:
It is hard to keep children from eating and drinking when they are hungry or thirsty. But fasting guidelines are in place to keep your child safe. It is important to follow them. Not following fasting guidelines can delay your child’s procedure. If you have questions about fasting or NPO instructions, talk to your care team.
Below are some general guidelines for fasting. These apply to children who can eat or drink by mouth as well as those who have a feeding tube. Fasting guidelines can differ based on the type of test, so always follow your care team’s instructions.
|NPO: Fasting guidelines for general anesthesia or IV sedation
|1 hour before the procedure
|STOP giving your child clear liquids* and CT contrast
|3 hours before procedure
|STOP giving your child breast milk
|6 hours before procedure
|STOP giving your child infant formula, Ensure® Clear, or milk (non-human).
|8 hours before procedure
|STOP giving your child solid food, tube (enteral) feeds, Ensure®, or liquids not listed as approved clear liquids*.
*Approved clear liquids include:
Please note that Ensure® Clear nutrition drink and similar products are not approved clear liquids.
Your care team may give other instructions based on the type of test and your child’s medical needs.
On the morning of general anesthesia, give your child all medicines they would normally take unless your child’s care team tells you not to give them.
Usually, taking medicine with a sip of an approved clear liquid will not delay your child’s procedure. Medicines taken with any other liquid or solid food, such as yogurt or applesauce, will delay general anesthesia.
Your care team may give other instructions for fasting depending on the procedure or your child’s specific medical needs. Always follow the instructions given by your care team.
If your child is having a PET scan, your child should not have food or drink other than water or sugar-free flavored water for at least 4 hours before the scan. The sugar in other foods and drinks can interfere with the test. You may get additional NPO instructions if your child will have general anesthesia with the scan.
Reviewed: January 2024