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HelpALife
How it works
Safety & privacy
Join as Donor
Request Blood Help
How it works
Safety & privacy
Join as Donor
Request Blood Help
Blood groups
Blood donors by blood group
Live donor coverage, compatibility and finding guides for every group — including rare phenotypes.
O+
O+ donors near you
Finding guide
O−
O− donors near you
Finding guide
A+
A+ donors near you
Finding guide
A−
A− donors near you
Finding guide
B+
B+ donors near you
Finding guide
B−
B− donors near you
Finding guide
AB+
AB+ donors near you
Finding guide
AB−
AB− donors near you
Finding guide
Rare groups
Bombay (Oh) blood group
Why rare donors should register
Blood group compatibility
Become a donor — 60 seconds