A lot has been written about the risks & mostly theoretical & associated with genetic testing. Genetic information is highly personal, often difficult to understand, subject to considerable interpretation, and of widely variable predictive power. Two main kinds of worries arise. One pertains to how the individual will react to genetic information about him- or herself. Another pertains to how others & including employers, insurers, etc. & will react to it.
But there’s an interesting twist, here. Part of the risk of genetic data lies in how that data is interpreted, and how it’s interpreted depends in part upon what kinds of studies have been done on the relevant bit of genetics. The fact that you happen to have a certain string of DNA is meaningless until interpreted in light of relevant scientific studies. But here’s the problem. If you get tested today, and get your test results next week, new information released next month may alter the interpretation of those results. That may change the risk you face.
The result is that at least some of the risks posed by a genetic test are entirely outside of the control of the company that sells that test. That’s pretty odd, as product safety goes. Who determines just how safe a chainsaw is? The maker of that chainsaw. Who determines how many safety features are built into a new car? The maker of that car. Who determines the risk of a genetic test? That’s much harder to answer.