Contamination and other errors in DNA analysis have occurred at the Washington State Patrol crime labs, most of it the result of sloppy work. The most common problems are cross-contamination by ...

A strand of DNA recovered from Nancy Guthrie’s Arizona home is undergoing extensive testing at the FBI’s crime lab as the ...

A genetic genealogist predicts DNA results in the Nancy Guthrie disappearance could take months after the FBI received a hair sample from a private lab.

The FBI has received DNA evidence recovered from the Tucson, Arizona, home of Nancy Guthrie, including test results from a hair sample, sources familiar with the investigation told Fox News Digital. A ...

A rapid DNA testing machine displays 77 minutes remaining on a 90-minute test. The use of rapid DNA testing is becoming more widespread across Connecticut as an evidentiary tool. Credit: Mark Mirko / ...

US Customs and Border Protection collected DNA samples from less than 40% of illegal immigrants stopped at the nation’s borders in 2022, preventing federal law enforcement from solving violent ...