Authorities investigating the disappearance of Nancy Guthrie are testing DNA they hope will point them toward a suspect. The DNA comes from a glove that was found about two miles from Guthrie's house.

Pima County Sheriff Chris Nanos said the results that investigators have received from DNA testing in the Nancy Guthrie case so far haven't led to a suspect.

The case is important because it involves a type of DNA testing that had never been considered in Oklahoma, and will likely pave the way for future cases.

I was one of the first to spit into a test tube, giving up my DNA forever to learn more about my health and heredity. You know, the ones that promise to connect you with distant relatives you didn’t even know existed or reveal genetic risks for ...