human body


Question by  jeff33 (33)

What is the rarest blood type?

I may donate blood, but I think my blood is rare, so I don't know if I will be helping.


Answer by  India (49)

The rarest is AB- forms only .7% or about 1 in 167 people.


Answer by  Cali2307 (1337)

The one that is least often present is AB Rh negative. However, any blood type where demand is greater than supply is considered rare. Those in greatest demand change constantly.


Answer by  tamarawilhite (17883)

AB negative is the rarest common blood type. However, it can be used by blood banks. There are also rare blood types unique to families.

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