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Questions and Answers
What is the reason for not taking maternal blood before 10 weeks gestation in noninvasive antenatal determination of fetal blood group?
What is the reason for not taking maternal blood before 10 weeks gestation in noninvasive antenatal determination of fetal blood group?
- There is not enough cell-free DNA in maternal plasma before 10 weeks gestation (correct)
- The maternal blood can interfere with the fetal blood group testing before 10 weeks gestation
- The fetal blood group cannot be accurately determined before 10 weeks gestation
- The placenta is not fully formed before 10 weeks gestation
Who can benefit from non-invasive cell free fetal DNA testing for determining fetal blood group?
Who can benefit from non-invasive cell free fetal DNA testing for determining fetal blood group?
- Only RhD positive pregnant women
- Pregnant women carrying multiple babies
- Only RhD negative pregnant women (correct)
- Pregnant women with a history of blood transfusions
What does a D positive test result mean in noninvasive antenatal determination of fetal blood group?
What does a D positive test result mean in noninvasive antenatal determination of fetal blood group?
- The test result is inconclusive
- At least one fetus is predicted to be D positive (correct)
- All fetuses are predicted to be D positive
- None of the fetuses are predicted to be D positive
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