5 mL random urine

Test cannot be added to a urine sample previously utilized for urinalysis testing (LAB1160, LAB1164, LAB8379).

None

Drug of abuse screening tests are to be used for medical purposes only and not for non-medical purposes (e.g., employee, competitive athlete, or forensic testing).

Screen includes THC with a cutoff of 50 ng/mL for the main 

metabolite of THC (9-carboxy-THC).



If quantitative confirmation is needed for THC, call the Laboratory at 
356-3527. Allow up to seven days for confirmatory results.

Quantitative confirmation is at an additional charge.



It is highly unlikely that passive (second-hand) inhalation of 

marijuana smoke will result in a positive screening test.  Research 

studies have shown that maximum urinary concentrations of 9-carboxy-

THC levels only reach 15-20 ng/mL following passive inhalation of 

heavy marijuana smoke.





References:



Cone EJ, Johnson RE, Darwin WD, Yousefnejad D, Mell LD, Paul BD, 

Mitchell J.  Passive inhalation of marijuana smoke: urinarlysis and 

room air levels of delta-9-tetrahydrocannabinol.  J Anal Toxicol 

1987;11:89-96.



Hammett-Stabler CA, Pesce AJ, Cannon DJ.  Urine Drug Screening in the 

Medical Setting.  Clinica Chimica Acta 2002;315:125-135.

There is the possibility that other substances and/or factors may interfere with the test and cause erroneous results (e.g., technical or procedural errors). Call the lab at 319-356-3527 for additional information.

Assay is based on the kinetic interaction of microparticles in a solution (KIMS) as measured by changes in light transmission.