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    luzania52's Avatar
    luzania52 Posts: 2, Reputation: 1
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    #1

    Feb 23, 2014, 11:53 AM
    Is it possible...
    Is it possible that a sonogram taken in the first trimester to be off by 4 or 5 weeks?
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
    		  
    #2

    Feb 23, 2014, 11:56 AM
    Gestational dating is all based on Best Guess from available evidence.
    If there is a paternity issue then a DNA test AFTER the birth with all concerned parties would be in order.
    luzania52's Avatar
    luzania52 Posts: 2, Reputation: 1
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    #3

    Feb 23, 2014, 01:59 PM
    Quote Originally Posted by Curlyben View Post
    Gestational dating is all based on Best Guess from available evidence.
    If there is a paternity issue then a DNA test AFTER the birth with all concerned parties would be in order.
    K doesn't really answer my question... But thanks anyway.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #4

    Feb 23, 2014, 05:46 PM
    Not usually that far off. However, remember that we are still talking about a very small body.
    J_9's Avatar
    J_9 Posts: 40,298, Reputation: 5646
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    #5

    Feb 23, 2014, 07:03 PM
    Ultrasounds in early pregnancy, first trimester, are usually very accurate because they are measuring the organs that develop in a specific order, and measuring from head to rump. Rarely will it be off more than 2 weeks.

    Am I correct in assuming that paternity may be in question?
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