Pre Employment Drug Screening

Pre-employment drug screenings can be given to any prospective job applicant only after an offer of employment has been made. The candidate has a right to refuse to take the test, at that time the employer can decide to hire the candidate or not. Please be aware that this differs from a random drug screening that is given after the candidate is hired. As an employer your have the right to give a drug test that is not announced on a routine basis, or if there is suspicion of drug or alcohol abuse on the job. If the candidate refuses to take these tests, they may be terminated from the job. Most employers use 3rd party administrators and independent laboratories to conduct a drug screen. They will in turn give the results of the test to the employer.

Drug screens do not measure how much drug is in the urine, simply if a drug is present or not. Only these drugs are tested for in a standard drug screen:

The 5 Panel Drug Screen includes:

  • Amphetamines (including Methamphetamine, "Crystal Meth")
  • Cannabinoids (THC, Marijuana)
  • Cocaine
  • Opiates (Codeine, Morphine, Heroin, Oxycodone, Vidcodin, etc.)
  • Phencyclidine (PCP)

Adulterant Detection 

NationsCheck does employ methodologies that can detect the use of adulterants that could mask the use of drugs. Adulterants can be added to urine, in order to interfere with the accuracy of drug tests. They are often oxidative in nature - hydrogen peroxide, and bleach have been used, sometimes with pH-adjusting substances like vinegar or sodium bicarbonate among other chemicals constantly being . These can be detected by drug testing labs, but some of the less expensive tests do not look for them. 

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