Why does Maude Lebowski have The Dude blood-tested before she engages him in coitus?

xaxorm: Why does Maude Lebowski have The Dude blood-tested before she engages him in coitus?
I’m pretty sure I know the answer, man. But there are some twists to this issue that I wonder if you have been made privy to.
Fish B has spoken. He’s the real Walter Sobchek!

Answers and Views:

Answer by Fish B
I personally would be calling a bio-haz team to be air lifted into the area and I would have NATO fence off the entire area and place a nuke testing site a few clicks away from the OP AREA with full ’round the clock Satellite surveillance BEFORE ANY testing was done on either one of those two dirty mofo’s