Presymptomatic testing
Presymptomatic Testing
Presymptomatic testing (pronunciation: pre-sym-tom-at-ic test-ing) is a type of genetic testing used to determine the likelihood of developing a genetic disorder before symptoms appear.
Etymology
The term "presymptomatic" is derived from the prefix "pre-" meaning before, and "symptomatic" referring to the presence of symptoms. Thus, presymptomatic testing refers to testing conducted before the onset of symptoms.
Definition
Presymptomatic testing involves the analysis of a person's DNA to identify changes or mutations that may lead to a genetic disorder. This type of testing is typically offered to individuals who have a family history of a genetic disorder but who have no symptoms themselves at the time of testing.
Related Terms
- Genetic Testing: A type of medical test that identifies changes in chromosomes, genes, or proteins to predict a person's chance of developing or passing on a genetic disorder.
- Predictive Testing: A type of genetic testing that is used to determine the likelihood that a healthy individual with a family history of a certain disorder will develop that disorder.
- Carrier Testing: A type of genetic testing that can determine if a person is a carrier for a specific genetic disorder.
- Prenatal Testing: A type of testing done during pregnancy to check the fetus for certain genetic disorders.
Usage
Presymptomatic testing is often used in the context of genetic counseling. It can provide information about a person's risk of developing a specific genetic disorder, which can be useful for making decisions about healthcare and lifestyle. However, it also raises ethical and psychological issues, as the knowledge of a potential future illness can cause anxiety and distress.
See Also
External links
- Medical encyclopedia article on Presymptomatic testing
- Wikipedia's article - Presymptomatic testing
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