Upper Gi Scope!!!

I have my upper GI scope scheduled for this coming Wed afternoon.  I thought Deana had told me she would  sending out instructions, but I haven't received anything yet  I wrote down  n a piece of paper, fast and i also have beside it "clear liquid okay".  I am assuming because my scope is in the afternoon that is why i would be allowed clear liquid.  I wonder when I can last eat though?! 

thanks,

Jen