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    eleggatt's Avatar
    eleggatt Posts: 1, Reputation: 1
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    #1

    Feb 1, 2010, 09:24 AM
    How do iknow if the baby is mine
    My wife's bloodtype is A+. My bloodtype is RH-. My child is O-. Is the child mine?
    Can a baby have different blood than it's parents?
    J_9's Avatar
    J_9 Posts: 40,298, Reputation: 5646
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    #2

    Feb 1, 2010, 09:28 AM
    Thank you for taking the time to ask your question at AMHD.

    To clear something up, RH is not a blood type. Blood types are A, O, B, AB,

    RH is your Rhesus factor, meaning you are + or -. Your wife's blood type is A with a positive (+) RH factor.

    So, your blood type has to have a letter such as the A, O, B or AB.

    In answer to your other question, yes, it is possible that the baby has a blood type other than the parents, rarely, but it's possible. Genetics plays a role.

    Finally, without a DNA test, it is impossible for us to say one way or another if this child is or is not yours.
    Rich11111's Avatar
    Rich11111 Posts: 99, Reputation: 25
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    #3

    Feb 2, 2010, 07:56 AM

    I agree, Blood type alone is not enough to test a child's Paternity, I would advise a DNA test.
    J_9's Avatar
    J_9 Posts: 40,298, Reputation: 5646
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    #4

    Feb 2, 2010, 07:58 AM
    Blood type is genetic. To determine paternity you have to go to the cellular level.
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
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    #5

    Feb 2, 2010, 01:10 PM
    Before you go out and accuse your wife of infidelity you really need to know your blood type first. You may be creating a hurricane level problem for no reason.

    Has your lady ever given you reason to suspect that the child is not a product of you and your lady's efforts?

    What are you going to say to this lady if you are wrong!
    J_9's Avatar
    J_9 Posts: 40,298, Reputation: 5646
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    #6

    Feb 2, 2010, 01:11 PM
    Quote Originally Posted by donf View Post
    you really need to know your blood type first.
    Exactly, RH- is not a blood type, but is part of the "blood type makeup."
    Devorameira's Avatar
    Devorameira Posts: 2,461, Reputation: 981
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    #7

    Feb 2, 2010, 03:25 PM

    I worked in laboratories for 30+ years and have seen babies quite commonly have different blood types than their parent.

    Each person's blood is one of four major types: A, B, AB, or O. Blood types are determined by the types of antigens on the blood cells. Antigens are proteins on the surface of blood cells that can cause a response from the immune system.

    The Rh factor is a type of protein on the surface of red blood cells. Most people (about 85%) are Rh+ (positive) like your wife. The remaining 15% of our population do not have the Rh factor so they are Rh-(negative) like you and your baby. Since your wife is Rh+ (positive), the baby's father has to be Rh-(negative) like you, so that's an encouraging sign.

    Relax... It's very possible that the baby is yours, but only a DNA test can tell you with 99%+ certainty.

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