Have you heard of “touch DNA?” This mundane, yet menacing phenomenon exposes the double-edged sword of forensic science. With just an innocent handshake, an indirect transfer of epithelial ...

Prosecutors have said they matched "touch DNA" found on a knife sheath near one of the victims to DNA taken from Kohberger using investigative genetic genealogy, or IGG techniques. Defense ...

She said that contamination can be difficult to find in cases where there is low-level, or touch, DNA evidence, raising the specter that even more DNA profiles were contaminated. Touch DNA is ...

In its case against Bryan Kohberger, the man accused of killing four University of Idaho students in November 2022, the prosecution’s most important piece of evidence may be a DNA sample taken ...

Brett Payne. The lab tested samples from the sheath for “touch DNA” – which can come in the form of skin cells that are shed on items being touched, said Rylene Nowlin, an Idaho State Police ...

In Kohberger's case, investigators said they found "touch DNA," or trace DNA, on the sheath of a knife that was found in the home where the students were fatally stabbed. The FBI used the IGG ...

In legal filings from June 2023, his defense said the state’s claim is not from blood, but rather touch DNA on the sheath located at the violent scene. In those same filings, the defense said ...

DNA testing on parts of a knife sheath detected a single source, said Rylene Nowlin, an Idaho State Police forensic laboratory manager. The lab tested samples from the knife sheath for “touch ...