State drug lab chemist Annie Dookhan labeled the vials as containing THC, the active ingredient in marijuana. But when another chemist ran the vials through a machine to confirm Dookhan’s ...

New details involving a scandal that rocked the state's crime lab may put more cases at risk.State police closed the lab on Aug. 30 after chemist Annie Dookhan allegedly failed to follow testing ...

DENVER — The EPA has revoked a testing certification for the Colorado Department of Public Health and Environment’s (CDPHE) water quality lab, after an investigation found a chemist ...

These were the lab results affected by the data problem. A senior chemist with the agency manipulated data, impacting the accuracy of thousands of water tests going back several years. The chemist ...