As the busy Fourth of July holiday week gets closer, the American Red Cross asks donors to celebrate by making a blood or platelet donation appointment to help power the blood supply through mid-summer. While all blood types are needed, donors with type O blood are most urgently needed.

Making and keeping donation appointments now is critical to ensuring blood products are available for all patients – including those in trauma situations that may require several lifesaving transfusions – in the weeks to come. Type O negative blood is often reached for in emergencies when there isn’t time to match a patient’s blood type. Type O positive is the most common blood type, so it’s important to keep type O blood and all blood types on hand at hospitals for people facing both chronic illness and sudden, life-threatening conditions.

Don’t wait – add a blood or platelet donation appointment to your summer calendar today by visiting RedCrossBlood.org, calling 1-800-RED CROSS or by using the Red Cross Blood Donor App.