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A 37-year-old member asked:

I want to find out who my baby's father is without a dna test. can i use the old fashioned blood type testing?

2 doctor answers6 doctors weighed in
Dr. James Ferguson
Pediatrics 46 years experience
Too vague: Blood type testing can certainly exclude a designated person if their blood type is incompatible with that of the child. For example, a dad who is ab would not have a kid that was an o. But narrowing down & proving someone is by this means is unlikely.There are some companies that offer dna tests for this purpose & some states will require this method to identify dads for child support disputes.
Dr. Richard Roberts
Pediatrics 46 years experience
In summary, you can exclude a father, but not prove fatherhood.
Jun 23, 2015
Dr. Richard Pollard
Anesthesiology 30 years experience
See below: Not reliably. It will positively rule our certain people, but not be as specific as you need.

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Last updated Jun 23, 2015

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