A type of testing used to detect changes in the structure of chromosomes and DNA. DNA translates itself to form proteins. The genetic testing is actually used to check the abrupt changes in the structure and position of chromosomes. If the wrong gene is translated it will form an abnormal protein. Genetic testing is therefore used to identify genetic disorders. Genetic testing tells a person the chance of developing or passing of a disease.
Some Methods Are Used For Genetic Testing Which Are As Follows:
Molecular genetic testing is a type of testing that studies only short a sequence of genes or DNA and points to the abnormalities and disorders present in it. It is mostly used to study single genes. It is also said to be future of clinical genomics. It is highly involved in detecting structural and chromosomal variations.
Chromosomal genetic test is a type of testing used to study the whole chromosome. It involves the study of larger length of DNA to ensure if there are any major and large genetic abnormalities or not.
Biochemical genetic testing is used to study molecules of proteins and their activity at certain levels. Abnormalities are indicated by biochemical testing that indicates a genetic disorder.
Genetic Test Is Very Helpful In Pregnancy:
Genetic testing is done to check fetus during pregnancy. Testing is done to check either the fetus is normal or suffering from any disease. Two types of testing are done:
Amniocentesis: This test is usually done between 15 and 20 weeks of pregnancy. The doctor inserts a hollow needle in women’s abdomen and a small amount of amniotic fluid is removed from the area around the developing fetus. This fluid is then checked to know the sex of the child and genetic abnormalities. It also tells that if there is a risk of premature birth, as it shows how much the organs of the fetus have been developed.
Chronic villus sampling (CVS): It is a form of parental diagnosis to determine genetic and chromosomal disorders in fetus. It is usually done between 10 and 12 weeks of pregnancy. This time a piece of placenta is removed to detect the genetic problems existing in the fetus.
There May Be Some Risk Factors That Involves:
– As it is a very helpful testing and there is a very little risk of miscarriage as high as 1-2% which is very low.
– Sometimes there is a risk of infection and amniotic fluid leakage. It leads to a condition called as oilgohydramnios. If this condition is not treated well there is continuous leakage of amniotic fluid and it lead to under development of lungs in baby.
Pregnant women may suffer from some problems as follows:
– When the women are above age of 34-35 and she is pregnant. There is a great risk of chromosomal abnormalities development in the child. Trisomy is the most common when a pregnant woman is above 34. Genetic testing helps to detect these problems.