Amadd wrote on Jul 6
th, 2010 at 6:33pm:
An interesting part of thier advertising states:
- The problem free pre-employment test - Saliva Multi Drug Test
- Perfect test in "for cause" and "reasonable suspicion" situations
What I am talking about that has really gotten my goat, is the
ongoing tests where there has been no cause for suspicion, and where it is a distinct possibility that residual (long gone) substances will cause a positive test result.
Obviously I have had no problem performing my tasks as usual, and obviously I haven't been under any suspicion for any dire results that these residuals may have caused.
If a random test were to be conducted as recently as the past few weeks, I would've returned a positive result on many occasions.
All major industries around here have pre-employment and ongoing drug and alcohol testing. At one stage, one industry in the area didn't do drug testing, and they ended up with all the druggies. That's the argument I've heard anyway.
Saliva based testing is generally 'problem free' because it is not sensitive enough to register drugs that are at residual levels. So if you get a saliva test, you'd be very unlucky to register positive.
As far as marijuana is concerned, it will linger in the system for up to a month, and that
will be picked up by a urine test, but not a saliva test - but that only applies to really heavy users anyway. Occasional users don't have the same retention issue.
Most industries opt for saliva testing because it's much less of a hassle, and it can be carried out by non-medical staff.