Genetic testing for cancer
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Medical tests are employed to detect specific changes or mutations in an individual's genes and this procedure is known as genetic testing. With numerous types of genetic testing available, the variety continues to expand with ongoing advancements in medical technology.
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By detecting alterations in your genes, chromosomes or proteins known as mutations; genetic testing can predict the likelihood of cancer occurrence throughout your life.
While genetic tests cannot guarantee the development of cancer, they can detect if you possess a greater susceptibility to it than others.
Having a gene mutation does not guarantee that an individual will develop cancer. For instance, despite having a 45% to 65% possibility of acquiring breast cancer due to the presence of such genes, some women may remain free from this ailment throughout their lives. Conversely, there are instances where individuals with just a mere 25% likelihood can contract breast cancer.
There are several factors to contemplate when contemplating genetic testing for cancer.
Deciding to undergo genetic testing is a unique and individual choice that can stem from various factors. However, because of its complexity, it's advisable to only make the decision after consulting with trusted sources such as your loved ones, healthcare professionals and genetics experts.
The situations in which ASCO suggests contemplating genetic testing are as follows:
The presence of cancer in one's personal or family history indicates the possibility of a genetic origin.
The presence of a definite genetic alteration can be precisely demonstrated through a test.
The outcomes can assist in identifying or handling a medical issue. For instance, you may implement measures to decrease your susceptibility such as undergoing surgery, taking medication, getting regular check-ups or altering your lifestyle habits.
Gene testing kits can be purchased without a doctor's order. These tests allow you to obtain your own test kit, provide a saliva sample for DNA analysis and send the materials off to labs for results.
Before considering the use of a home-based genetic test, which is also referred to as a direct-to-consumer genetic test, it's important to understand its purpose and limitations. It's crucial that you comprehend what areas are being tested for accuracy and precision while comprehending the degree of reliability provided by these tests even if one source from an established company provides accurate outcomes; there still exist restrictions on how much information they can deliver.
If a medical professional suggests cancer screening or genetic counseling based on your specific risk for the disease, it is not advisable to replace them with home-based genetic tests. Seeking advice from your doctor and discussing any doubts you may have regarding genetics testing are always recommended. In order to prepare for the outcome of your test results, trained genetic counselors can provide assistance in understanding what lies ahead.