Mark Hansen in the ABA Journal with an overview of how crime labs have finally come under scrutiny following a “string of shoddy, suspect and fraudulent results” in Boston, New York, North Carolina, Nassau County, N.Y. and elsewhere.

In St. Paul, Minn., assistant public defender Lori Traub stumbled into her local lab’s problems and

says she was horrified by what she found: The lab, an old-fashioned “cop shop,” was run by a police sergeant with no scientific background, had no written operating procedures, didn’t clean instruments between testing, allowed technicians unlimited access to the drug vault, and didn’t have anyone checking anyone else’s work. Analysts didn’t know what a validity study was, used Wikipedia as a technical reference, and in their lab reports referred to “white junk” clogging an instrument.

It gets much worse. A West Virginia state serologist, following the DNA clearance of a man he had previously identified as a rapist, “was eventually found to have falsified test results in as many as 134 cases during a 10-year period.” Oklahoma City Police Department crime lab chemist Joyce Gilchrist

who testified as a prosecution expert in 23 death penalty cases, including those of 12 inmates who were later executed, was fired in 2001 for doing sloppy work and giving false or misleading testimony. Nicknamed “Black Magic” by detectives for her seeming ability to get lab results no other chemist could, Gilchrist was never prosecuted for her alleged misdeeds, though she reportedly was named a defendant in at least one lawsuit against the city by a convicted rapist who was later exonerated.

More: And according to a new paper, it turns out that many state police labs are actually paid per conviction, a practice that tends to incentive false-positive error.

Filed under: Boston, crime and punishment, expert witnesses, North Carolina, Oklahoma, West Virginia