TESTING METHODS

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 permanently entrapped in the hair. Evidence of drug use cannot be washed or bleached out. 

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. 

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. 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. Books about "beating urine tests" are 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, since tampering is pervasive, most urine collections have to be observed, causing further uneasiness, particularly for women. 

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.