Do you have O negative (O-) blood? We need your help!
Anyone can receive O- blood products, so they are always in demand. This is especially true during emergencies, when there isn’t time to determine patient’s blood type. However, because less than 9 percent of the US population has O- blood, it is often in short supply.
The O- Pledge encourages those with O- blood to donate whole blood at least four times per year or red cells three times per year at Boston Children’s Blood Donor Center.
Fill out the form to take the 2025 O- Pledge.