My understanding is that it takes 2 - 4 hours from the time food enters your stomach, until it leaves. I recently had an upper endoscopy (for other reasons) I hadn't eaten in 12 hours and the GI dr. said there was a lot of food in my stomach. So, I have gastroparesis and would like to talk to a knowledgable dr about a pacemaker for my stomach. The GI dr prescribed Reglan to help the stomach digest. I really don't think it is doing anything, although it has only been around a week.
But, yes, this is the cause of my constant nausea. The food sits in my stomach and rots.
Sorry, I don't know. :-/ My knee-jerk reaction is that that's within normal limits, though. But honestly, I could be totally wrong. Anyone else know?