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Visa and others sign on to offer this new employee benefit

September 30, 2015, 3:00 PM UTC
DNA genetic testing (crop)
DNA genetic testing (crop)
Photograph by Colin Cuthbert—Getty Images/Science Photo Library RM

Visa (V), along with a handful of Silicon Valley companies and venture capital firms, will offer employees genetic testing for breast and ovarian cancer as a benefit.

The testing, announced Wednesday, is being done in partnership with Color Genomics, a San Francisco-based genetic testing startup. Participating employers will cover at least half of the cost of the test — which is normally $249 but will be $199 for the month of October— for employees.

Other employers that have signed on include venture capital firm Andreessen Horowitz, grocery delivery service Instacart, online publisher Medium, the Sacramento Kings basketball team, business messaging service Slack, venture capital firm Social+ Capital, digital payments processor Stripe, online survey company SurveyMonkey, and startup incubator Y Combinator.

Workers order genetic “spit kits” online and have them delivered by mail. After receiving the samples, Color analyzes 19 genes—including BRCA1 and BRCA2, the two gene mutations related to breast and ovarian cancer.

Based on the results, testers can contact board-certified genetic counselors at Color about the next steps and enroll in a screening prevention plan.

What makes Color’s test unusual is that it comes with a much smaller price tag than typical genetic tests for breast cancer, which can cost anywhere from $1,500 to $4,000 and is often not covered by medical insurance. Those that do cover it often require that customers provide proof of a strong family history of breast and ovarian cancer. But Color says that roughly 50% of people carrying BRCA1 and BRCA2 mutations do not have the family history that would allow for insurance coverage.

Color Genomics, which debuted in April, has raised $15 million in funding from a host of big Silicon Valley names including Khosla Ventures, Laurene Powell Jobs, wife of Steve Jobs; Cisco’s former chief technology officer Padmasree Warrior, Twitter executive Katie Stanton, Eventbrite co-founder Julia Hartz, Yahoo co-founder Jerry Yang, PayPal co-founder Max Levchin, Dropbox co-founder Drew Houston, and Box co-founder Aaron Levie.

Genetic testing sponsored by employers is a new trend that could become more common. Insurance giant Aetna (AET) is piloting a program that makes genetic testing available to its corporate customers for metabolic issues related to weight gain.

Silicon Valley companies have been steadily adding more progressive benefits for employees, including breast milk delivery, and unlimited maternity leave.

For more about healthcare companies, watch this Fortune video: