Scientific principles of genetic screening/testing:
Scientific Principle One: Diagnostic testing
Diagnostic testing is a form of genetic testing/screening that is used to help discover if
there is or isn't a genetic or chromosomal condition wrong with the patient.
This form of testing is often used to confirm a diagnosis previously made which
was based on earlier observations. Carrying out a test can be a simple physical
examination or something more complex such as chemical testing. Diagnostic
testing can be performed at any period in a persons life and is also available
before birth, but a negative about the testing is that it cannot be used to
identify every gene and genetic condition. The benefits of having a diagnostic
test done include the person being able to make choices on the types of health
care they want and being able to prepare for managing the condition.
•Scientific Principle Two: Preimplantation Testing
Preimplantation testing is another form of genetic testing. It is often referred to as PGD and
it is a specialised form of testing that is used to reduce the risk of having a
child, created through assisted reproduction, born with a disorder. It does
this by looking for genetic changes in embryos that have been made with
assistance from reproductive techniques like in-vitro fertilisation. In-vitro
fertilisation is the process of placing the woman's eggs and the mans sperm
together outside of the woman then, once fertilised, the new embryos are placed
back inside the woman. To carry out a PGD test , a few of the cells from the
embryo are taken and tested for genetic disorders and only embryos without
disorders are placed back inside the woman. The benefit of this is that it
helps stop babies being born with genetic disorders
Diagnostic testing is a form of genetic testing/screening that is used to help discover if
there is or isn't a genetic or chromosomal condition wrong with the patient.
This form of testing is often used to confirm a diagnosis previously made which
was based on earlier observations. Carrying out a test can be a simple physical
examination or something more complex such as chemical testing. Diagnostic
testing can be performed at any period in a persons life and is also available
before birth, but a negative about the testing is that it cannot be used to
identify every gene and genetic condition. The benefits of having a diagnostic
test done include the person being able to make choices on the types of health
care they want and being able to prepare for managing the condition.
•Scientific Principle Two: Preimplantation Testing
Preimplantation testing is another form of genetic testing. It is often referred to as PGD and
it is a specialised form of testing that is used to reduce the risk of having a
child, created through assisted reproduction, born with a disorder. It does
this by looking for genetic changes in embryos that have been made with
assistance from reproductive techniques like in-vitro fertilisation. In-vitro
fertilisation is the process of placing the woman's eggs and the mans sperm
together outside of the woman then, once fertilised, the new embryos are placed
back inside the woman. To carry out a PGD test , a few of the cells from the
embryo are taken and tested for genetic disorders and only embryos without
disorders are placed back inside the woman. The benefit of this is that it
helps stop babies being born with genetic disorders