By Taste. Just kidding use an auto antifreeze tester
Do a compressor oil acid test.
If propylene glycol is in your system the last thing you would have to worry about is drug screening. Even at low dosagess this chemical can kill. There are several documented casses of people ingesting propylene glycol and in most the ones who have ingested it either became very ill or died.
If they test for it
Pump it in while it is circulating and continually test the freeze point of the mix. If you make it too thick the solution will lose it`s heat transfer properties reducing system capacity. +10F is usually ok.
well that really depends on how much u have taken. and advil asprins and stuff like really isn't any kinda of drug that will test you 4 that's jus sumtin that will show up if abused b4 your drug screening
Yes
Well, it can be done, but it's a bit redundant to do it before you have the leak repaired. Recharging refrigerant in an HVAC system isn't cheap, so it would make sense that you'd want to ensure that you needed it done as little as possible. Also, if the technician recharging the refrigerant detects the leak (which they probably will, as they'll do a performance system test with a pressure gauge when they come to service the system), they may refuse to charge the system, as the law prohibits them from doing anything which they know will release refrigerant into the atmosphere.
The NVAC EPA test would be almost impossible to cheat on, but you can study for it and learn what you need to know to pass it. There are resources and sites online to help you prepare for the test.
I'm assuming you are referring to a test to determine how much albuterol or levalbuterol you have in your system. There is no such test.
It depends on the specific urine drug test that is being used; But yes, it's possible to see the level of amphetamine in your system.
No. If they take a blood test then there will be some drugs in the blood but it won't say exactly how much you have used. If it is a urine test then it will be showing after it has been through your system. Yes. The test is quantitative, showing the level of the drug and/or its metabolite in your system at the time of the test.
Not if you are proven to be impaired on the job. A quanitity test is done to check on how much is in the system.