Hold on before you buy or invest in the personalized genetic industry. An undercover investigation found that four genetic testing companies delivered contradictory predictions based on the same person's DNA and that test results often contradicted patients' actual medical histories. I'm no Quincy but that's bad, right? These saliva tests seems hokey to me. I still don't understand why patients will buy these things or spend cash on health screening gimmicks but won't show up to complete physical exams? It sure would be nice to have patients put their trust in the primary care doctors once in a while.