For the first time, I'm donating white-blood cells. A kid needs type-O blood, and I qualify. I've given blood before as well as platelets. This is all new to me. As it has been explained to me, I'll have one tube removing my blood where it is passed to the machine that separates out the WBCs. Then the blood is returned in my other arm. This could take up to 2 hours. So no phone use for me. I'm bringing a DVD player.
I had to take medicine that increases my WBC production for 17 hours (very specific number actually). It makes me feel warmer, so I guess this is what a hot flash may feel like. It did interfere with my sleeping, but my sleep schedule has always been one of my worst enemies anyway. No real difference there.
But unlike the normal blood donation, this has a much more immediate effect. They may even cart those WBCs to that kid in the next few hours, so that's a warm fuzzy feeling.