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

SCOTTSDALE, Ariz. - A judge in Maricopa County has thrown out the DNA sample that led to the arrest of a man accused of killing a Scottsdale woman in 2015. The murder of Allison Feldman confounded ...

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 ...

DNA-barcoded probes let nanopores identify which metal-ion signals belong to which targets, enabling multiplexed sensing in ...

The FBI is now utilizing new technology to conduct advanced analysis on the DNA sample.

The FBI DNA hair sample Nancy Guthrie case has reached a critical forensic moment in 2026. Federal investigators now hold DNA data extracted from a hair sample recovered inside the home of Nancy ...