The supply of type O negative blood at the American Red Cross has dropped to critical levels.

If you are a type O negative donor you can make the difference between an adequate blood supply and a lingering summer shortage.

Type O negative blood is always in high demand because it can be transfused to patients with any blood type, especially in emergency situations.

While all blood types are needed during the critical summer months, the Red Cross urges those eligible donors with blood type O negative to make and keep appointments to give blood this summer.

We highly encourage all type O negative blood donors who meet the eligibility requirements to double the difference by becoming a double red cell donor. If eligible, you can give to give two donations at once.

Please call 1-800-RED CROSS or click here to find a convenient blood donation location and to schedule a lifesaving blood donation appointment.

Thank you from your American Red Cross and the hospital patients we serve.