Rent or buy BabyBeat --- the original home doppler device.
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Re: Vanishing twin and NT/AFP tests

Posted by Bill Cusick MD on 13:25 4/12/2007:
In Reply to: Vanishing twin and NT/AFP tests  posted by  fishdoc on 17:17 4/11/2007:

No data on which to answer you question, although it is logical to assume that the blood screening efficacy would be affected (to what extent unknown)in the presence of a lost twin

False negative rate is quite low and not as clinically important as false positive rate and sensitivity

wc

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