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BRCA2 Mutation Detection (Genetic Test)

Published: August 9, 2026Updated: August 16, 2026

This test checks for specific genetic changes (mutations) in the BRCA2 gene, which may increase your risk of certain cancers, including breast and ovarian cancer.

Quick summary

["Genetic testing helps identify inherited cancer risks for personalized prevention and monitoring."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
100761-6
Short code
PALB2 Mut Anl Bld/T
Synonyms
PALB2 Mut Anl Bld/T
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have a strong family history of breast, ovarian, prostate, or pancreatic cancer, or if you have been diagnosed with certain types of cancer at a younger age. It may also be suggested if you have a personal or family history of conditions like male breast cancer, Ashkenazi Jewish ancestry, or other genetic syndromes linked to BRCA2 mutations.

What to Expect Before the Test

You will need a blood sample drawn from a vein in your arm. The process is quick and typically done in a clinic or lab setting. You may be asked to fast for a few hours before the test, but this depends on the healthcare provider’s instructions.

What the Results Mean

Results can be categorized as negative (no BRCA2 mutation found), positive (a known mutation detected), or variant of uncertain significance (VUS), which requires further evaluation. A positive result means you carry a mutation linked to higher cancer risk and may need closer monitoring or preventive measures.

Next Steps After Testing

If a BRCA2 mutation is found, your healthcare team will discuss risk-reducing options such as regular cancer screenings, medications, or preventive surgeries like mastectomy or oophorectomy. Support groups and genetic counseling are also available to help you understand your results and next steps.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

BRCA2 Mutation Screening

Frequently asked questions

What does this test measure?
This test measures genetic mutations in the BRCA2 gene, which plays a role in DNA repair. Mutations in BRCA2 are associated with an increased risk of developing breast, ovarian, prostate, and pancreatic cancers. Early detection through genetic testing helps guide preventive strategies.
How accurate is this test?
Genetic testing for BRCA2 mutations is highly accurate, but no test is 100% perfect. Some mutations may not be detected by standard testing methods, and new genetic testing techniques are continually improving. A healthcare provider will interpret results in the context of your family history and overall health.
Can I get this test if I don’t have a family history of cancer?
Yes, you may still be recommended for BRCA2 testing if you have certain risk factors, such as being of Ashkenazi Jewish descent, having been diagnosed with certain cancers at a younger age, or having a personal history of conditions linked to BRCA2 mutations. Genetic counseling can help determine if this test is appropriate for you.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy