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Fasting and CBC draw


I am finishing a 3 day fast today.  Not as bad as I thought!  Question: Should I go in for my blood draw before or after I break my fast?  

I used to fast a lot. It seemed to help even before a blood draw. But not sure the results are definitive with fasting. For one thing I know when I did fast under imatinib it actually was not good for my stomach. With that drug you are supposed to eat and I did but very little and well it caught up to me. What medication are you on?