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the universal type

O-negative blood donors desperately needed nationwide

Jul 29, 2025 | 1:07 PM

Canadian Blood Services is calling on all donors and potential donors with O-negative blood to donate as soon as possible.

According to the organization, O-negative blood is vital in emergency care, because it is compatible with all blood types, and can be given to any patient. When seconds count, and there is no time to check blood types, hospital patients receive O-negative blood – the universal blood type.

Only seven per cent of Canadians have O-negative blood, it’s noted.

“If you know that your blood is O-negative, Canadian Blood Services is asking you to book an appointment or come to a donor centre today. It’s likely that someone in your family also has O-negative blood, so you can double your impact by inviting them to join you,” they say in a release.

“Hospitals have the blood they need today, but that could change if appointments aren’t filled. Demand is high for O-negative blood this summer, so O-negative donations are needed right away to keep the supply strong.”

Visit blood.ca, download the GiveBlood app to find a location near you, or call 1 888 2 DONATE (1-888-236-6283).