Our expert says:
I am not sure what test was done at 19 weeks. The usual blood triple test is done at 16 weeks. In any event, a 1.7% chance means that about 2 out of a 100 chance of Down's syndrome, therefore 98 out of a 100 chance that the baby is normal. An amnio takes three weeks to get a result because the cells have to be grown and cultured. Unfortunately, all she can do is wait.
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