In a message dated 17 Nov 96  12:14:22, Dennis Mummert wrote:
DM>       yeah, that's the problem with chemical tests for THC.  They
LP>don't
DM>show current use - only that you DID use in the last 30 days.  NOT
LP>proof of
DM>impairment.
LP>So what are they trying to prove with the hair thing?
 DM>        That's a mystery to me.  I've had others claim that such
 DM> evidence couldn't be used in employee screening.
That's like telling a jury NOT to think of a pink elephant - it is still 
there in their minds - and a "negative" employee screening will still be in 
the minds of the employer.
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