TACOMA, Wash. -- A Tacoma-based blood center offers donors a deal: Give a pint of blood, get a pint of beer.

Cascade Regional Blood Services says the promotion has worked so well at six Tacoma pubs and breweries, it's expanding its "Give blood, get beer" offer to its bloodmobile for pubs in Federal Way and Steilacoom.

Cascade's director of donor resources, Dan Schmitt, says it's a fun way to get more donors, and it's good for the restaurants as well.

The News Tribune of Tacoma reports donors who are at least 21 years old are given a coupon for a free pint of beer. The pub must wait at least four hours after the blood drive ends before donors can cash in on their free