What is my blood type?
Learn why blood type matters and how donation records help match supply to patient needs.
Know Your Blood Type
There are 8 common blood types based on ABO and Rh factors. Each plays a vital role in saving lives.
Universal Donor
Most Common
A Group
A Group
B Group
B Group
AB Group
Universal Recipient
Why Blood Type Matters
Blood type determines compatibility between donor and recipient. Knowing your type helps donation centers direct your contribution where it is most useful. A mismatch can cause serious reactions, which is why testing is essential.
8
Blood Types
3
Minutes to Test
Compatibility Chart
Which blood types can safely donate to and receive from each other.
| Type | Donate To | Receive From |
|---|---|---|
| O- | All types | O- |
| O+ | O+, A+, B+, AB+ | O+, O- |
| A- | A-, A+, AB-, AB+ | A-, O- |
| A+ | A+, AB+ | A+, A-, O+, O- |
| B- | B-, B+, AB-, AB+ | B-, O- |
| B+ | B+, AB+ | B+, B-, O+, O- |
| AB- | AB-, AB+ | AB-, A-, B-, O- |
| AB+ | AB+ | All types |
Why blood type matters
Blood type determines compatibility between donor and recipient. Knowing your type helps donation centers direct your contribution where it is most useful.
Common blood groups
There are eight common blood types based on ABO and Rh factors. Some types are rarer than others, which can make each donation especially valuable.
Finding your type
If you have donated before, your blood type may already be in the system. If not, staff can test your blood during the donation appointment.
Key Takeaways
- ✓Blood type is used to help match patients with compatible donations.
- ✓Donation records may show your blood type if it has been tested and confirmed.
- ✓Knowing your blood type can help you understand where your donation is most useful.
What to do next
Step 1
Ask the donation team whether your blood type is on file.
Step 2
Explore the FAQ page for common donation questions.
Ready to donate?
Find out if you are eligible
Check the eligibility requirements and schedule your blood donation appointment today.