Cozart® RapiScan Oral Fluid Drug Testing System validation by GC-MS/MS analysis Marta Sánchez, Amparo Arroyo, Maria Barbal, Mariona Palahí and Agustí Mora Ann Toxicol Anal, 20 3 (2008) 131-136 Published online: 05 March 2009 DOI: 10.1051/ata/2009012