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XP - New blood test for Down Syndrome

elainejelainej
in 2nd Trimester

I'm too lazy to retype & TB won't let me copy:

https://community.thebump.com/cs/ks/forums/thread/59314264.aspx

 

First birth: Natural (med-free) Second birth: Hell, no. Epidural all the way. Pregnancy Ticker Baby Birthday Ticker Ticker
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Re: XP - New blood test for Down Syndrome

  • JhawkCEJhawkCE member

    I think this is actually has the potential to increase the number of amnio's. 

    Think about it.  If there is a simple blood test then everyone is going to want it.

    From my understanding the test is kind of like the one hour glucose test in that if your baby does have downs it will give you a positive, but it also gives false positives. In order to actually determine if your baby actually does have downs, you would have to get an amnio. SO there will be a lot more people taking the blood test and getting a false positive which will make a lot more people want to get the amio to confirm.

     

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  • elainejelainej
    imageJhawkCE:

    I think this is actually has the potential to increase the number of amnio's. 

    Think about it.  If there is a simple blood test then everyone is going to want it.

    From my understanding the test is kind of like the one hour glucose test in that if your baby does have downs it will give you a positive, but it also gives false positives. In order to actually determine if your baby actually does have downs, you would have to get an amnio. SO there will be a lot more people taking the blood test and getting a false positive which will make a lot more people want to get the amio to confirm.

     

    This test is supposed to only have a false positive rate of 0.2%, which is much better than the false positive rate of 5% (or more) that you get with the NT scan/integrated screening. Also, I think they are recommending right now that the test only be given to patients age 35+, or with "screen positive" results from NT, or who are otherwise high risk.

    First birth: Natural (med-free) Second birth: Hell, no. Epidural all the way. Pregnancy Ticker Baby Birthday Ticker Ticker
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  • JhawkCEJhawkCE member
    imageelainej:
    imageJhawkCE:

    I think this is actually has the potential to increase the number of amnio's. 

    Think about it.  If there is a simple blood test then everyone is going to want it.

    From my understanding the test is kind of like the one hour glucose test in that if your baby does have downs it will give you a positive, but it also gives false positives. In order to actually determine if your baby actually does have downs, you would have to get an amnio. SO there will be a lot more people taking the blood test and getting a false positive which will make a lot more people want to get the amio to confirm.

     

    This test is supposed to only have a false positive rate of 0.2%, which is much better than the false positive rate of 5% (or more) that you get with the NT scan/integrated screening. Also, I think they are recommending right now that the test only be given to patients age 35+, or with "screen positive" results from NT, or who are otherwise high risk.

    Ahh, the stuff I read on it did not have this information.  That makes a big diff.  Thanks for the extra info.  

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  • kiarstinkiarstin member
    That is really cool!
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