drug use from hair specimens. 1987: Psychemedics begins offering services commercially "Psychemedics Corporation - Encyclopedia.com". www.encyclopedia...

strength—the amount of reflected light received.[citation needed] Psychemedics Corporation Salicylate "Drug Testing". Retrieved 22 April 2011. via Medical...

expanding Prep's health and wellness program. The company contracted is Psychemedics, who have also successfully implemented a similar policy at Rockhurst...