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Determining Blood Type

When selecting a sperm donor, his blood type along with the blood type of the egg source can be used to predict the possible blood types of their offspring. Please consult your physician about any ABO or Rh compatibility issues in a future pregnancy. People that are Rh- who select a Rh+ sperm donor may require treatment with Rhogam during pregnancy. It’s important to discuss this with your physician before you get started.

Blood Type
Egg Source
Sperm Source
A
B
AB
O
A
A or O
AB, A, B, or O
AB or A or B
A or O
B
AB, A, B or O
B or O
AB or A or B
B or O
AB
AB or A or B
AB or A or B
AB or A or B
A or B
O
A or O
B or O
A or B
O
Rh Factor
Egg Source
Sperm Source
Neg (-)
Pos (+)
Neg (-)
Neg (-)
Pos (+) or Neg (-)
Pos (+)
Pos (+) or Neg (-)
Pos (+) or Neg (-)

Note: In cases where the egg source is Rh- and the sperm donor is Rh+, Rhogam is recommended.

Please consult your physician about any ABO or Rh compatibility issues in a future pregnancy. Pregnant people that are Rh- who select a Rh+ sperm donor may require treatment with Rhogam during pregnancy.

Blood Type FAQ

Yes, a child is able to have a different blood type than both parents.
The child’s blood type is decided by both parents’ blood type. Parents all pass along one of their 2 alleles to make up their child’s blood type. There are 4 maternal blood types and 4 paternal blood types, so there are 16 total combinations to consider when predicting the child’s blood type.

Find your Donor Match

Use our Donor Search Tool to find a Donor that matches your criteria. If you have any questions about the above blood type charts or blood type compatibility, please do not hesitate to contact us at (206) 588-1484.