Genetic Analysis for BRCA1 and BRCA2 Mutation Detection (Blood)

Your doctor may order this test if you have a personal or family history that suggests an increased risk of hereditary cancer, such as relatives diagnosed at a young age, multiple family members with breast, ovarian, or related cancers, or a previous cancer diagnosis of your own. Identifying a BRCA mutation can help your care team guide screening, prevention, and treatment decisions.

Your healthcare provider may recommend this test if you have a strong family history of breast or ovarian cancer, or if you’ve been diagnosed with these cancers at a younger age than typical. It may also be suggested if you’ve had certain types of cancer treatments or if you’re at high risk due to other genetic factors.

Before the test, you will typically meet with a genetic counselor or health care provider to review your personal and family medical history and discuss what the test can and cannot tell you, along with possible emotional, privacy, and insurance considerations. No fasting or special preparation is required, and the sample is usually collected through a simple blood draw or saliva collection.

You’ll typically have a simple blood draw, usually taken from your arm. No special preparation is needed, but you may want to drink plenty of water beforehand to help with comfort.

Results are generally reported as positive, negative, or a variant of uncertain significance. A positive result means a BRCA mutation was found and may increase your risk of certain cancers. A negative result means no mutation was identified, though it does not eliminate all cancer risk. A variant of uncertain significance means a change was found, but it is not yet clear whether it affects your health. Your provider will explain what your specific result means for you.

Results can be positive (you have a BRCA mutation), negative (you don’t have a known mutation), or indeterminate (the test results are unclear). A positive result means you may have a higher risk of cancer and could benefit from closer monitoring or preventive measures.

After your results are ready, schedule a follow-up visit with your doctor or genetic counselor to review them in detail. Depending on the outcome, next steps may include enhanced screening such as earlier or more frequent imaging, preventive medications, risk-reducing surgery, or offering testing to other family members. Your care team can also connect you with emotional support resources and help you build a personalized care plan.

If your results are positive, your healthcare team will discuss next steps, which may include additional genetic counseling, more frequent cancer screenings, or preventive surgeries like risk-reducing mastectomies.