I don't know anything about a height requirement. But they might require 5'10" etc, but they ask tons of questions. They test you for stds, and diseases that run in your family etc. I've donated 3 times. Each time was a 6month contract, I could donate 2-3 times a week at 65$ a pop. They don't pay anything up front, after 6months following the passing of another std test the cut you a check for a few grand. I think there are some other way to donate but none that ive used.
They pay you a couple of grands for a donation?