I did red-cell-only last time, and I didn't get cold at all. Granted, I'm usually pretty warm anyway. They replace the red cells with saline anyway, so most people usually feel great afterwards.Giving platelets takes longer, and can make you cold during the process (they put blankets on us), but it's actually easier on the body overall since you don't lose red blood and fluid volume.
Interesting. The American Red Cross allows donations every eight weeks.
16 for red-cell-only donations. I donated a few weeks ago, so now I can't until January. I'm almost halfway to a mug!