Cannabis Drug Testing (Urine)
Science & Research
Undated - Study - Delta(9)-Tetrahydrocannabivarin testing may not have the sensitivity to detect marijuana use among individuals ingesting dronabinol
2012 - Study ~ Unexpected interference of baby wash products with a cannabinoid (THC) immunoassay.
2011 - Study ~ The current status of community drug testing via the analysis of drugs and drug metabolites in sewage
2011 - Study ~ A
method for CP 47, 497 a synthetic non-traditional cannabinoid in human
urine using liquid chromatography tandem mass spectrometry
2011 - Study ~ Liquid chromatography-tandem mass spectrometry analysis of urine specimens for K2 (JWH-018) metabolites.
2011 - Study ~ Zinc Reduces the Detection of Cocaine, Methamphetamine, and THC by ELISA Urine Testing. 8 to 11 mg of zinc daily; over 40 mg/day can cause zinc poisoning.
2011 - Study ~ Concentrations
of delta9-tetrahydrocannabinol and 11-nor-9-carboxytetrahydrocannabinol
in blood and urine after passive exposure to Cannabis smoke in a coffee
2011 - Study ~ Quantitative measurement of JWH-018 and JWH-073 metabolites excreted in human urine.
2011 - Study ~ Differentiating new cannabis use from residual urinary cannabinoid excretion in chronic, daily cannabis users.
2011 - Study ~ Efavirenz interference in urine screening immunoassays for tetrahydrocannabinol.
2010 - Study ~ Urine Drug Screening: A Valuable Office Procedure
2010 - Study ~ Delta9-tetrahydrocannabivarin
testing may not have the sensitivity to detect marijuana use among
individuals ingesting dronabinol.
2010 - Study ~ Testing for cannabis in the work-place: a review of the evidence.
2010 - Study ~ Quantitation
of Total 11-Nor-9-Carboxy-Delta 9-Tetrahydrocannabinol in Urine and
Blood Using Gas Chromatography-Mass Spectrometry (GC-MS).
2010 - Study ~ Differentiating new cannabis use from residual urinary cannabinoid excretion in chronic, daily cannabis users.
2010 - Study ~ Detection of cannabigerol and its presumptive metabolite in human urine after Cannabis consumption.
2010 - Study ~ Screening for the synthetic cannabinoid JWH-018 and its major metabolites in human doping controls.
2009 - Study - Extended urinary Delta9-tetrahydrocannabinol excretion in chronic cannabis users precludes use as a biomarker of new drug exposure
2009 - Study - Do Delta(9)-tetrahydrocannabinol concentrations indicate recent use in chronic cannabis users?
2009 - Study - Urinary toxicological screening: Analytical interference between niflumic acid and cannabis
2009 - Study ~ Evaluation of a Human On-site Urine Multidrug Test for Emergency Use With Dogs
2009 - Study ~ Passive inhalation of cannabis smoke--is it detectable?
2009 - Letter ~ Short
communication: Urinary excretion of
11-nor-9-carboxy-Delta(9)-tetrahydrocannabinol in a pregnant woman
following heavy, chronic cannabis use.
2008 - Study ~ Urine Drug Screening: Practical Guide for Clinicians
2008 - Study - Urinary elimination of 11-nor-9-carboxy-delta9-tetrahydrocannnabinol in cannabis users during continuously monitored abstinence
2007 - Study ~ Urine drug test interpretation: what do physicians know?
2007 - Study ~ Family physicians' proficiency in urine drug test interpretation.
2007 - Study - The effects of adulterants and selected ingested compounds on drugs-of-abuse testing in urine
2007 - Study - Toxicity From the Use of Niacin to Beat Urine Drug Screening
2007 - Study - Simultaneous GC–EI-MS Determination of Δ9-Tetrahydrocannabinol, 11-Hydroxy-Δ9-Tetrahydrocannabinol, and 11-nor-9-Carboxy-Δ9-Tetrahydrocannabinol in Human Urine Following Tandem Enzyme-Alkaline Hydrolysis
2006 - Study - Detection time of regular THC use in urine shorter than often assumed
2005 - Study ~ Papain: a novel urine adulterant.
2004 - Study ~ Passive Inhalation of Cannabis Smoke.
2003 - Study ~ Urinary excretion profiles of 11-nor-9-carboxy-Delta9-tetrahydrocannabinol: a Delta9-THC-COOH to creatinine ratio study #2.
2002 - Study ~ Effects of Stealth adulterant on immunoassay testing for drugs of abuse.
2002 - Study ~ A procedure for the detection of Stealth adulterant in urine samples.
2002 - Study ~ Effects of oxidizing adulterants on detection of 11-nor-delta9-THC-9-carboxylic acid in urine.
2002 - Study ~ Monitoring urinary excretion of cannabinoids by fluorescence-polarization immunoassay: a cannabinoid-to-creatinine ratio study.
2001 - Study - Delta9-tetrahydrocannabivarin as a marker for the ingestion of marijuana versus Marinol: results of a clinical study
2001 - Study ~ Evaluating the impact of hemp food consumption on workplace drug tests.
2000- Study ~ Cannabinoid mimics in chocolate utilized as an argument in court
2000 - Study ~ Effects
of pyridinium chlorochromate adulterant (urine luck) on testing for
drugs of abuse and a method for quantitative detection of chromium (VI)
1999 - Study - Potassium nitrite reaction with 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid in urine in relation to the drug screening analysis
1999 - Study ~ Urinary excretion profiles of 11-nor-9-carboxy-delta9-tetrahydrocannabinol: a delta9-THCCOOH to creatinine ratio study.
1999 - Study ~ Adulteration of urine by "Urine Luck".
1999 - Study ~ Potassium
nitrite reaction with 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic
acid in urine in relation to the drug screening analysis
1999 - Study ~ Concentration of Marijuana Metabolites in the Urine After Ingestion of Hemp Seed Tea.
1997 - Study - Hemp oil causes positive urine tests for THC
1997 - Study ~ Hemp oil ingestion causes positive urine tests for Δ9-tetrahydrocannabinol carboxylic acid
1997 - Study ~ A procedure to overcome interferences caused by the adulterant "Klear" in the GC-MS analysis of 11-nor-delta9-THC-9-COOH
1997 - Study ~ Excretion of Cannabinoids in Urine After Ingestion of Cannabis Seed Oil.
1994 - Study ~ Increased detection of marijuana use with a 50 micrograms/L urine screening cutoff.
1993 - Study ~ Effect of freezing on the concentration of drugs of abuse in urine.
1993 - Study ~ High urinary cannabinoids from a hashish body packer.
1990 - Study ~ Cross-reactivity of selected compounds in the Abbott TDx cannabinoid assay.
1988 - Study ~ Marijuana-Laced Brownies: Behavioral Effects, Physiologic Effects, and Urinalysis in Humans Following Ingestion
1987 - Study ~ Cannabinoid intake by passive smoking
1986 - Study ~ Contact highs and urinary cannabinoid excretion after passive exposure to
1985 - Study ~ Excretion patterns of cannabinoid metabolites after last use in a group of chronic users
1983 - Study ~ Passive inhalation of marihuana smoke and urinary excretion of cannabinoids
1982 - Study ~ Persistence of Urinary Marijuana Levels After Supervised Abstinence.
1981 - Study ~ Laboratory verification of “heavy” and “light” users of cannabis
1978 - Study ~ Homogeneous enzyme immunoassay for cannabinoids in urine.
1975 - Study ~ Detection of cannabis products in urine by radioimmunoassay.
1972 - Study ~ Confirmation of the Presence of 11-Hydroxy-r 9-Tetrahydrocannabinol in the Urine of Marijuana Smokers
1971 - Study ~ Delta-9-tetrahydrocannabinol: Metabolism and Disposition in Long-term Marihuana Smokers.