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Who Must Undergo a Genetic Test?

Genetic testing enables doctors to determine defective genes for diagnosis of medical conditions that one is likely to develop. Doctors analyze small samples of tissues of fluid from the body during genetic testing.

A 15 to 20 weeks pregnant woman is taken through a genetic blood test (amniocentesis or chorionic villus sampling) to find out genetic disorders that may affect the unborn baby. The baby’s gender and genetic problems that may affect it are determined by inserting a hollow syringe into the abdomen of the woman, and a small amount of amniotic fluid is drawn from the area near the fetus for testing.

Although amniocentesis shows how the lungs of the baby have developed in case premature birth is to be expected, but the process can also lead to a miscarriage. Chorionic villus sampling is done on a 10 to 12 weeks pregnancy whereby a small piece of the placenta is removed for genetic testing on the fetus. The procedure can also induce a miscarriage. Who needs a genetic test?

If a woman who has experienced two or more miscarriages the doctors will recommend a genetic test to be done on her. Specific chromosome problems in the fetus a trigger miscarriage.

Most of the children who have genetic health conditions are born of older parents hence doctors strongly insist on genetic testing for older parents. There is a high risk of a child to develop new dominant genetic mutations when its father is older. Women who are 34 years and above are highly likely to give birth to babies who have chromosomal problems.

A woman who has given birth a stillborn child who has physical signs of a genetic illness also needs the test. The baby may be born alive but if it has severe birth defects the mother needs a genetic test although other causes of birth defects include poison or toxic substances, physical trauma or infection before delivery.

Doctors have to find out whether a parent (who has a relative suffering from a genetic illness) is a carrier of the genetic illness or not. The doctors will ensure that the baby is born free of the genetic disease. You are the carrying the recessive gene of the disease you will not have the signs and symptoms of the disease, but you can transfer the gene to the baby. If the child gets the recessive gene and a normal dominant gene from the other parent, he or she will also not show the signs and symptoms of the disease, but the gene can be passed down to its kids.

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