Genetic testing for BRCA1 mutations is available and involves analyzing DNA from a blood or saliva sample. Individuals with a family history of breast, ovarian, or related cancers are often encouraged to undergo testing. If a BRCA1 mutation is detected, enhanced screening protocols, such as more frequent mammograms and MRI scans, may be recommended. Preventive measures, such as prophylactic mastectomy or oophorectomy, may also be considered.