Antenatal Screening

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Antenatal screening

Blood tests

  • iron content - anaemia 
  • groups - ABO and Rhesus
  • spina bifida - alphafetoprotein


  • small amount of amniotic fluid drawn from amniotic sac
  • sent to be chemically analysed and for skin cell culture
  • 16 - 18 weeks of pregnancy 
  • foetus is detected on ultrasound to allow insertion of hollow needle
  • needle


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