Northern Arizona University’s Bookstore will host a blood drive on the Flagstaff campus in its parking lot from 10:30 a.m. to 3:30 p.m. Thursday, April 21.

The United Blood Services mobile unit will be onsite for the event. Participants may reserve a spot online. Walk-ins also will be welcome.

All donors will be entered into a drawing for prizes.

Contact Jeanne Santillan at (928) 523-6670 for information.