We used to offer limited testing for specific diseases based on a person’s ethnicity. However, we have learned that this can be problematic—many people do not know their precise ethnic origins, and many diseases can be found in multiple ethnicities. Given this, we might miss carriers if the testing performed is too specific.

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There are several options to reduce your chance of developing cancer, or to catch it early, if you are BRCA positive. Options differ for men and women, depending on their risk for certain cancers:

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Some people think that they are nothing like their siblings, or may notice many differences in looks and behaviors. This is partly because siblings don’t share all the same genes. So, if your brother or sister tested negative on a carrier screening test, it does not guarantee that you will also test negative.

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Both JScreen and 23andMe offer carrier screening – tests to identify parents who are at risk to have a child with a genetic condition – but the screening differs in several ways (see table below).

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A person should consult with a genetic counselor if there are questions about his/her genetic health related to pregnancy, cancer, or other conditions. A genetic counselor will take a thorough medical and family history, will assess risks for genetic diseases, and will offer options for appropriate testing.

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JScreen’s goal is to provide information. Our genetic counselors do not make recommendations for carrier couples. Instead, they discuss the genetic condition of concern, and explain available reproductive options to the carrier couple.

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