The American Red Cross has issued a call for type O negative and AB blood donors to make an appointment to donate.

Type O negative blood and type AB plasma are two of the most in-demand blood products by hospitals. The demand increased even more after severe weather in some parts of the country forced the cancellation of thousands of donations this month.

Eligible donors can learn more, find a donation opportunity and schedule an appointment by going to redcrossblood.org or calling 1-800-733- 2767