http://www.newscientist.com/channel/mech-tech/mg18825303.800
Rowan Hooper
"A standard test for cocaine fails to detect the drug in some samples, and can give positive results when none of the drug is present SUSPICIONS that the internationally recognised field test for cocaine is unreliable have been confirmed by a lab investigation. Not only does the test fail to detect the drug in some samples, it can also wrongly give positive results when no cocaine is present. " [Sub Required]
