Saliva Drug Test, Cocaine, Opiates, Benzo, THC, Meth, AMP, Marijuana

February 17, 2016


Saliva Drug Testing Kits



How It Works 

Urine drug tests screen the urine for the presence of a parent drug or its metabolites. The level of drug or its metabolites is not predictive of when the drug was taken or how much the patient used. Rather, it is simply a confirmatory report indicating the presence of the parent drug or its metabolites. Urine is generally considered the best medium to measure in terms of detecting drugs and drug metabolites. Compared to blood, urine offers a longer window of detection that may be one to three days for some drugs and up to 30 days for others. Urine drug testing is by far the most extensively studied and validated process for drug testing.

The One Step Drug Screen Test Dipcard is an immunoassay based on the principle of competitive binding. Drugs which may be present in the urine specimen compete against their respective drug conjugate for binding sites on their specific antibody.During testing, a urine specimen migrates upward by capillary action. A drug, if present in the urine specimen below its cut-off concentration, will not saturate the binding sites of its specific antibody. The antibody will then react with the drug-protein conjugate and a visible colored line will show up in the test line region of the specific drug strip. 

Urine VS Saliva 

Urine is the most widely used matrix. In Australia, analytical facilities and procedures for urinalysis are well established, relatively convenient and competitively priced. Urine offers only an intermediate window of detection (1-3 days) thus making test scheduling a significant issue for many applications. Its susceptibility to tampering and adulteration is also a problem and makes appropriate supervision critical. 
Saliva analysis is also a developing technology. Currently, there are limited analytical facilities in Australia, however, established United States laboratories are accessible. Sample collection is relatively quick, noninvasive and resistant to tampering although as with urinalysis, adequate supervision is required. Saliva analysis has been shown to be useful in determining very recent drug use (1-36 hours). It is not considered economically viable or practical for continuous drug use monitoring.


Many variables may affect the amount of time that a drug remains detectable in the urine or other biological samples, including a drug's half-life, the subject's state of hydration and fluid balance, frequency of use, route of administration, cut-off concentration used by the testing lab to detect the drug, and many other variables. 


SubstanceCut Off µg/lDetectable in SalivaDetection
Period (days)

Amphetamine (AMP)300 µg/l2 - 5 hours
after use1 - 2

MethAmphetamine (mAMP)300 µg/l2 - 5 hours
after use1 - 3

Cocaine (COC)300 µg/l2 - 5 hours
after use2 - 4

Opiates, Heroin (OPI)300 µg/l2 - 5 hours
after use1 - 2

Marijuana (THC)50 µg/l2 - 5 hours
after use1 - 3

Ecstasy (MDMA)500 µg/l2 - 5 hours
after use1 - 2



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