The American Red Cross will ensure supplies are ample for Labor Day weekend and beyond by providing incentives to blood donors.
Those who donate blood or platelets between Aug. 26 and Sept. 9 will have the chance to win one of five $1,000 American Express gift cards.
Also, everyone that shows up to donate between Aug. 31 and Sept. 2 will receive a free Red Cross T-shirt.
The Red Cross says it often is difficult to keep pace with patient needs in summer.
It urgently needs platelets and types O negative, A negative and B negative blood.