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Test ID: CDAU2    
Drug Abuse Survey with Confirmation, Evaluation 2, Urine

Method Description Describes how the test is performed and provides a method-specific reference

Screening is performed by immunoassay (see IDOAU/8248 Drug Abuse Survey, Urine). All positive screening results are confirmed by gas chromatography-mass spectrometry before a positive is reported. (Armbruster DA, Schwarzhoff RH, Hubster EC, Liserio MK: Enzyme immunoassay, kinetic microparticle immunoassay, radioimmunoassay, and fluorescence polarization immunoassay compared for drugs-of-abuse screening. Clin Chem 1993;39:2137-2146; Ellis GM Jr, Mann MA, Judson BA, et al: Excretion patterns of cannabinoid metabolites after last use in a group of chronic users. Clin Pharmacol Ther 1985;38:572-578; Foerster EH, Dempsey J, Garriott JC: A gas chromatographic screening procedure for acid and neutral drugs in blood. J Anal Toxicol 1979;3:87-91; as modified to incorporate some alkaline drugs by LE Ebnet and TP Moyer, Mayo Clinic)

Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.

Monday through Sunday

Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.

Same day/1 day

Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result

2 days

Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

2 weeks

Performing Laboratory Location The location of the laboratory that performs the test

Rochester