A member asked:

I have a pelvic & abdominal ultrasound at 945am. i'm supposed to fast 12hrs before but if i have a vegan protein shake 2.5hrs before is it ok?

2 doctors weighed in across 2 answers
Dr. Jeff Livingston answered

Specializes in Obstetrics and Gynecology

Follow directions: I'm not sure why the doctor would want you to fast before an ultrasound. That's a little bit different. Regardless those were the instructions you received so i would follow them exactly as directed.

Answered 10/17/2013

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NO: No 12 hours is 12 hours, food in the stomach and bowel ma obscure the ultrasound which is looking for fluid.

Answered 10/19/2013

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What is the difference between a pelvic & abdominal ultrasound?

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