16+ How Do I Get Tested For The Breast Cancer Gene
PNG. A negative genetic test means that a breast cancer gene mutation was not identified. The brca gene test is a blood test that uses dna analysis to identify harmful changes (mutations) a positive test result means that you have a mutation in one of the breast cancer genes, brca1 or a negative test result doesn't mean you definitely won't get breast cancer.
The issues around testing are complicated, and women who are interested in testing should discuss their risk factors with their health care providers and may want to. The genetic test itself simply involves taking a small sample of blood or saliva, which is sent to a lab for analysis. Genetic counseling is recommended for those who are interested in being tested for breast cancer gene mutations.
Only 5 to 10% of breast cancers occur in women with a clearly defined genetic predisposition for the disease.
Screening for genes such as brca1 or brca2 that predispose to dominantly inherited disease raises an additional, even more difficult, set of ethical there are good reasons to encourage mass screening of women for the breast and ovarian cancer genes. All women have at least a 1 in 8. While having a brca gene mutation greatly increases your risk of developing the flip side is that it's possible to test negative for the brca gene mutation and still end up with breast cancer. This test is only recommended for those who have a.