World's largest provider of hair testing for drugs of abuse

TESTING METHODS

URINALYSIS

Urinalysis is an older drug testing technology. This method has some problems that have been exploited by drug users. 

DETECTION PERIOD 
Urinalysis can generally detect drug use for the previous 2-3 days for most drugs, chronic marijuana use may be longer. After that the body flushes out the substance. A drug user can simply abstain for a short period of time, drink water, take the urine test and pass!  

EASE OF EVASION 
Drug users can substitute clean samples, or tamper with urine specimens. Information about "beating urine tests" is widely available and advertisements for "clean urine" and urine adulterating products are prevalent on the Internet. Beating a urine test is "no big deal" for an experienced drug user. 

INTRUSIVE COLLECTION 
The act of collecting a urine sample is intrusive and unpleasant. Also, to decrease the ability to tamper with the sample, urine collections should be observed. This may cause further uneasiness.

ORAL FLUID

DETECTION PERIOD 
Short - 24 hours. 

COLLECTION PROBLEMS 
Oral fluids are easily collected and are resistant to adulteration, substitution, and dilution. However, the very short time frame makes it easy to evade the test by laying off drugs for a day. 

HAIR TESTING

DETECTION PERIOD 
Psychemedics hair analysis can detect drug use for the previous several months. Temporary abstention won't beat the test.

EVASION 
Psychemedics hair testing cannot be evaded as in urinalysis since the drug residue remains easily entrapped in the hair.

COLLECTION 
A cosmetically undetectable snip of hair is easily collected without causing  embarrassment. Collection can be done in-house saving the time, inconvenience and the cost of having a job applicant visit a urine collection site.