Do you know your blood group...

[Karen]

I don't think you can anymore, at least I've never seen it done. Silly me, I've always given it away!

[Edwina's Secretary]

I don't think you can anymore, at least I've never seen it done.

Sure you can....

There are more than 400 for-profit plasma collection centers in the United States....
Expect to earn up to $35 for each donation (twice a week max). Donors who have been vaccinated for hepatitis B can earn up to $60 per week.

Not that I am recommending it!