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A member asked:
The test for trisomy 21 was okay in week 12 and bad at week 16. why?
A doctor has provided 1 answer
Integrated screening: tests for Down Syndrome & other disorders include 1st trimester Fetal UltraSound & maternal blood test for specific pregnancy-related proteins & a 2nd-trimester blood test for 4 pregnancy-related substances, the levels of which are interpreted for gestational age. Your OB may get another FUS & blood test, cell-free fetal DNA, so you can decide if you want a diagnostic test of fetal chromosomes.
Answered 9/8/2016
3.6k views
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Hi I had my 12 week scan and my trisomy 21 results were 1:470 is this something to worry about?also Papp a was 0.3955.what does this mean?
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