5 doctors weighed in:

Can a couple who both have o negative blood type have a child that has o positive blood?

5 doctors weighed in
Dr. Patrick Hieber
Pediatrics
3 doctors agree

In brief: Blood type

Assumming paternity is not in doubt, the rh antigen for one of the parents may be more subtly expressed on routine blood type testing.
More detailed tests can be done to diisclose which parent is rh "+" and explain the apparent discrepancy.

In brief: Blood type

Assumming paternity is not in doubt, the rh antigen for one of the parents may be more subtly expressed on routine blood type testing.
More detailed tests can be done to diisclose which parent is rh "+" and explain the apparent discrepancy.
Dr. Patrick Hieber
Dr. Patrick Hieber
Thank
Dr. Richard Pollard
Anesthesiology

In brief: See below

The transmission of the rhesus component (- and +) is a little more complicated than the transmission of the ABO blood type.
This means that it may be possible to have a positive child from negative parents.

In brief: See below

The transmission of the rhesus component (- and +) is a little more complicated than the transmission of the ABO blood type.
This means that it may be possible to have a positive child from negative parents.
Dr. Richard Pollard
Dr. Richard Pollard
Thank
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