One of the most comprehensive laws protecting genetic information has been passed in the US state of New Jersey. The Genetic Privacy Act declares that a person's genetic information is private property and cannot be collected, retained, or disclosed without written consent. Employers cannot refuse to hire anyone who declines to take a genetic test.

The new law also prohibits health insurance companies from denying access or setting higher rates for people who are genetically predisposed to certain diseases. However, with the applicant's consent, companies selling …