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  • urine
  • Drug-free urine was supplemented with analytes to assess the precision in three commercial drugs-of-abuse immunoassay systems below the SAMHSA-dictated cutoffs for amphetamines, opiates, benzoylecgonine, phencyclidine, and cannabinoids. (aaccjnls.org)
  • analytes
  • Typically, each procedure includes the following steps: specimen collection, sample washing, digestion or extraction of the hair sample, Immunoassay screening, and confirmation or quantitation of the various analytes. (druglibrary.org)
  • laboratories
  • Proficiency-testing data from the College of American Pathologists for 2010 reveal that 92% of laboratories perform the fluorescence polarization immunoassay used in this case, and all of the 407 participating laboratories currently use an immunoassay platform for MTX. (thefreedictionary.com)
  • Many laboratories, including our own, have replaced immunoassays for other immunosuppressants, which can also suffer from interferences, with laboratory-developed tests that use LC-MS/ MS (4). (thefreelibrary.com)
  • According to College of American Pathologists survey data from 2003 ( 1 ), nearly 3000 laboratories performed immunoassay-based drug screening, but only 50 were certified to perform federal workplace drug testing ( 2 ). (aaccjnls.org)
  • Advances
  • The marijuana metabolite cutoff was lowered from 100 μg/L to 50 μg/L in 1994, reflecting, "… advances in technology of immunoassay" ( 4 ). (aaccjnls.org)
  • precision
  • These linking agents permit ready covalent attachment of compounds of biological interest to polymer particles and lead to immunoassays of improved precision. (google.com)
  • The precision of three commercial immunoassay systems for drugs-of-abuse screening is adequate to detect drugs below SAMHSA cutoffs. (aaccjnls.org)