I keep reading about people who are on a two week liquid diet. I don't have to do one of those. I wonder why hospitals are all different. Has anyone had to have a test for carbon monoxide from smoking?

My surgeon required a three day liquid diet. I am not a smoker so maybe that is why I was not asked about CO1.

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Only clear liquids day before when I get sleeved. They did the co2 test with my blood test and since I had just quit mine was not too great.

My surgeon required 7 days preop liquid diet.

and no CO2 test fr me but again might be because I never smoke.

My surgeon is requiring 3 week pre-op Liquid and dinner. Currently on day 2 and i'm doing okay with the hunger but the tired is already kicking my butt

i did a 2 week liquid diet , no carbon test and I am a smoker. I was told its all about the BMi as for how long they want you on liquids. When I had my sleeve though I do know its 24hrs before surgery that you must NOT eat anything

The surgeon told me this liquid diet is to help shrink the liver ( or the fat on the liver). I'm assuming this will make it easier to retract to gain access to your stomach and minimize complications. That's my best guesstimate.