Wired News | Officers Sue Over Use of Hair Drug Tests:
Denise Lavore
"Studies have found dark-haired people are more likely to test positive for drugs because they have higher levels of melanin, which allows drug compounds to bind more easily to their hair. The Boston lawsuit says the officers may have had some kind of environmental exposure to cocaine, but that they didn't use the drug themselves. The former officers are seeking reinstatement to their jobs, back pay, and unspecified damages. "