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Tsan Yuk's prenatal checkup - Downs screening

  1. #9
    sunnysideup is offline Registered User
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    Dec 2005
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    Thanks again JennyB. That was useful info to know. But do you know whether the bloodtest done at 16 weeks is more accurate than at 12th week? Are they idential test?

    I am confused as to when I should do the blood test. With ultrasound at week 12 or after it at week 16?

  2. #10
    beans is offline Registered User
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    Hello sunnysideup,

    I thought I would share some information that I managed to gather from Tsan Yuk Hospital with you. The integrated test (IT) which includes ultrasound at 10 to 14 weeks followed by a blood test at 16 weeks can detect 86% of Down's Syndrome (DS) pregnancies. You can also choose to have the blood test alone at 15 to 20 weeks in which case the detection percentage is said to be around 70%. As you may be aware, these tests can only assess the risk of Fetal Down Syndrome. If you are looking for definitive results, then you need to undergo chorionic villus sampling CVS (at 10-12 weeks) or amniocentesis (at 15-20 weeks) - both of which procedures are said to carry a tiny risk of miscarriage, however. Hope this helps.

  3. #11
    sunnysideup is offline Registered User
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    Thanks for thinking of me, beans! Appreciate your input!!

    Sunny

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