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| quote: | Originally posted by gehzumteufel
Okay Ruben, I understood most of that, but I want to make sure I am clear. They basically test for the part that is common in ALL methamphetamines, so in theory they could pop you no matter what? |
Yes, you will get busted no matter what. Urine tests do not test for 3,4-methylenedioxymethamphetamine (MDMA), rather they test for metabolites of methamphetamines. In other words, they are looking for the drug after your body has processed it a bit.
You can equate the drug test to a true or false question. The test is asking "Is there a trace of methamphetamine?". The solution either changes color or it does not. There is no way to differentiate between drugs. To differentiate between molecules you would have to run a mass spec, an IR spec, a NMR and a proton NMR. Only very large labs and universities can afford such equipment, and you need a very skilled eye to interpret NMR and proton NMR.
This is what they are testing for. Note the R-NH(2)-CH3 common in all of the molecules.

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Last edited by Electrophile on Dec-23-2008 at 07:14
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