Questions and Answers
What is the reason why maternal blood should not be taken before 10 weeks gestation?
There is not enough fetally derived cfDNA in the maternal circulation before 10 weeks gestation
What does a D positive test result in non-invasive cell free fetal DNA testing mean?
At least one fetus is predicted to be D positive
What is the advantage of using non-invasive cell free fetal DNA testing to determine fetal blood group for RhD negative pregnant women?
It offers an improved and more efficient service
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