screening for genetic disorder

• genetic testingtests which identify faulty genes

  • tests which identify faulty genes
  • allows people choices whether they want a family or not
• CVS - chorionic villus sampling

  • CVS can only be don 10-12 weeks into pregnancy
  • a piece of placenta is taken out and grown in a tissue cell or 7 days. then the DNA cells can b tested
• Amniocentosis

  • carried out 15-16 weeks into pregnancy
  • some fluid is removed from around the fetus
  • the fluid contains fetus cells which can be used for geneti screening
  • risk of miscarriage and termination of healthy baby
• PGD - preimpltantation gemetic diagnosis

  • alternative to pregnancy testing
  • the couple undergo normal IVF treatment
  • the developing embryos have one cell removed
  • the cell is careened for genetic disorders
  • very expensive