I gave some blood about five years ago when there was a national prostate cancer medical research project going on.
They never said it would be five phials of blood though, and as a fainter........although I was ready for it, the gorgeous Australian nurse (female before you all start) quickly noticed my transition to battleship grey.
As I was last in (haha), she basically held my hand and nursed me back from the brink with plenty of fluids.
MrsW wondered where I was, but knows what I'm like.
My test came back negative but some of the procedures she described are butt clenching.