BRCA testing is recommended for people whose personal health history, family history, or ancestry suggests they may carry a harmful mutation in the BRCA1 or BRCA2 genes. It is not recommended as a routine screening for everyone. The key is whether specific red flags exist in your background that raise the probability of carrying one of these gene changes.
Why BRCA Mutations Matter
BRCA1 and BRCA2 are genes that help repair damaged DNA. When one of them carries a harmful mutation, cells lose part of that repair ability, and cancer risk rises substantially. In the general population, roughly 1 in 400 people carry a BRCA mutation. Among people of Ashkenazi Jewish descent, the rate is about 1 in 40, or roughly 2%.
Women who carry a BRCA1 or BRCA2 mutation face a significantly elevated lifetime risk of breast cancer and ovarian cancer compared to the general population. Men with these mutations have a higher risk of breast cancer, prostate cancer, and pancreatic cancer. Knowing your mutation status can shape real decisions: more frequent screening, preventive medications, or even preventive surgery that dramatically lowers risk.
Personal Health History That Warrants Testing
Certain cancer diagnoses in your own medical history are strong signals. You are a candidate for BRCA testing if you have had:
- Breast cancer diagnosed before age 50
- Triple-negative breast cancer at any age
- Breast cancer more than once (bilateral or a second primary tumor)
- Ovarian, fallopian tube, or primary peritoneal cancer at any age
- Both breast and ovarian cancer in your lifetime
- Male breast cancer at any age
- Pancreatic cancer or metastatic/high-risk prostate cancer, especially with a family history of breast or ovarian cancer
These apply even if you have completed treatment and are cancer-free, as long as you have never been tested before. A prior cancer that fits the pattern above is itself a reason to pursue testing, because the result can change your ongoing surveillance plan and inform relatives about their own risk.
Family History Red Flags
You don’t need a personal cancer diagnosis to qualify. A strong family history is one of the most common reasons people are referred for BRCA testing. Patterns to pay attention to include:
- A first-degree relative (parent, sibling, child) or multiple second-degree relatives with breast cancer, especially diagnosed before age 50
- A relative with ovarian cancer at any age
- A male relative with breast cancer
- Multiple family members on the same side with breast cancer across generations
- A family member who had two BRCA-related cancers, such as both breast and ovarian cancer
- A known BRCA mutation already identified in a blood relative
When a mutation has already been found in your family, testing becomes straightforward. Labs can look for that specific mutation rather than sequencing the entire gene, which makes the result faster and more definitive. If a close relative tested positive and you test negative for that same mutation, your risk drops back to the general population level.
Family history on both sides matters. Many people focus on their mother’s side, but BRCA mutations are inherited equally from fathers. A father who carries a BRCA mutation may never develop cancer himself yet still pass the gene change to his children.
Ancestry and Ethnicity
People of Ashkenazi Jewish heritage (Central and Eastern European Jewish descent) carry BRCA mutations at roughly ten times the rate of the general population. Three specific founder mutations account for most of this elevated risk. In studies of Ashkenazi women with ovarian cancer, nearly 40% carried one of these mutations even when they had little or no family history of cancer.
Because the baseline mutation rate is so much higher, Ashkenazi Jewish ancestry alone, combined with any personal or family history of breast or ovarian cancer, is enough to warrant a risk assessment. Some guidelines support offering testing to all Ashkenazi Jewish individuals regardless of family history, though this remains a point of discussion among experts.
Other populations with known founder mutations include people of Norwegian, Dutch, and Icelandic descent, though the rates are lower than in Ashkenazi Jewish communities.
Testing Applies to Men Too
BRCA testing is often framed as a women’s health issue, but men carry and pass on these mutations at the same rate. Men with BRCA2 mutations in particular face elevated risks of prostate cancer that is more likely to be aggressive and diagnosed at a younger age. Male breast cancer, though rare overall, is strongly associated with BRCA2 mutations. Pancreatic cancer risk also rises in male carriers.
If your family history includes multiple breast or ovarian cancers, you should consider testing regardless of your sex. Your result doesn’t just affect your own screening plan. It tells your siblings, children, and extended family whether they need to be tested.
Who Does Not Need Testing
The U.S. Preventive Services Task Force explicitly recommends against routine BRCA risk assessment, genetic counseling, or testing for people whose personal history, family history, and ancestry show no association with these mutations. For someone with no relevant cancer in the family and no high-risk ancestry, the chance of carrying a harmful mutation is very low, and the potential for confusing or anxiety-inducing results outweighs the benefit.
This doesn’t mean you’re permanently excluded. If new information surfaces, like a relative being diagnosed with ovarian cancer or a cousin testing positive for a BRCA mutation, your risk profile changes and testing may become appropriate.
How the Testing Process Works
The recommended first step is genetic counseling, not the test itself. A genetic counselor reviews your personal and family medical history, maps out your cancer family tree, and uses validated risk assessment tools to estimate whether your pattern of cancers suggests a hereditary cause. Based on that assessment, the counselor helps you decide whether testing makes sense and which genes to test.
The test itself is a blood draw or saliva sample. Results typically take a few weeks. You’ll receive one of three results: positive (a known harmful mutation was found), negative (no mutation detected), or a variant of uncertain significance, meaning a change was found but scientists don’t yet know whether it increases risk. That last category can be frustrating, but it occurs less frequently as databases grow.
Genetic counseling after results is just as important as before. A positive result opens a range of options for surveillance and risk reduction, and a counselor can walk you through each one in the context of your age, health, and preferences. They also help you think through which family members should be informed and offered testing.
Cost and Insurance Protections
Cost has dropped dramatically. Median expenditures for comprehensive BRCA testing fell 68% between 2013 and 2022, and most privately insured individuals in that period had zero out-of-pocket costs. The Affordable Care Act requires most insurance plans to cover genetic counseling and BRCA testing for individuals who meet risk criteria, with no copay or deductible.
If you’re uninsured or don’t meet insurance criteria, several labs offer testing for a few hundred dollars, a fraction of what it cost a decade ago.
Federal law also protects you from discrimination based on your results. The Genetic Information Nondiscrimination Act (GINA) prohibits group health plans and health insurers from using genetic information to set premiums, deny coverage, or impose preexisting condition exclusions. Plans cannot request, require, or purchase your genetic information for underwriting purposes. They also cannot collect family medical history in connection with enrollment. One important gap: GINA does not cover life insurance, disability insurance, or long-term care insurance, so those are worth considering before you test.