The Weirdest Compliment I've Ever Received

In an email from a colleague:

So here's the story...you have the greatest blood ever. In particular, you
have kick-ass PMNs. As such, we're going to save you until Olivia needs
blood later this week...

So, in addition to my many other talents and positive qualities I can add "kick-ass PMNs" to the list, whatever that means. New York Blood Center eat your heart out! I got someone that wants to pay me for the greatest blood ever. Boo-ya-ka-sha!