Yes, I donate at work everytime there is a drive the first time was about five or six months out! I was nervous at first but did fine, I always tell them up front about my surgery so they don't rush me through (you know how they do) and I take my time after eating a tiny bit of cheese and sipping some water usually at least half a bottle). I haven't had any episodes, I also try to go right after I have eaten lunch or had a protein shake - my own choice so I don't get shaky not that I did, I just wanted to make sure...I would be mortified if I passed out at work LOL! Everyone has been wonderful, complimentary, asked lots of questions and cheered me on in the blood drive - I am sure you will have the same results. But I do recommend telling them in case you need to take some extra time or need some closer care, they are professionals - so I think you would be in good in hands