This results in stability for long periods of time, even in the absence of refrigeration. Adulteration of a hair specimen cannot occur. Normal washing, perming, straightening, or bleaching are ineffective evasive techniques. Such repetition is not possible with urine testing because the original 48-72 hour surveillance window will have passed by the time the initial test results are obtained. Hair is conveniently collected without embarrassment.
Employees can demonstrate by hair analysis that they have overcome their drug problems.
DFWP programs not only protect employers, but also provide opportunities for treatment and supportive services for those with substance abuse problems. DFWP programs can create an environment that fosters abstinence, provides social supports and facilitates access to additional help. In addition, employers with DFWP programs may be more willing to hire former welfare recipients with substance abuse problems if they have mechanisms in place to respond to this issue. The services are generally paid for by the employer. EAP services generally charge a flat fee regardless of how many employees actually use the services, and drug testing is paid for on a per test basis.