Ephedrine can show a false positive for amphetamines on a drug test.
Not if the test is for ephedrine.
test tungsten purity
No.
yes
yes so dont do it
Yes. However, ephedrine is not commonly tested for. If it is tested for depends on if it is a banned substance for whatever reason you are being drug tested. The International Olympic Committee bans ephedrine use after a certain threshold for example. Ephedrine is not an illegal drug outside of most competitions.
It won't if you wait 2 more days.
You test it by checking the melting point
No, Zyrtec does not contain any ephedrine/psyeudoephedrine ingredients.
Absolutely! Ephedrine and it's cousin pseudoephedrine show as false positives for amphetimines in urine, sweat and hair test. However in multi-panel test such as a saliva test when the authority is testing for both amphetimine AND methamphetimine it will show as meth since is is a primary drug for making meth. It will show up as positive EVERYTIME so be careful! If you are taking a test that only test for amphetimines it will show up as positive there. Not all drug test are equal. Some only test for a broad category as amphetimines. Others separate between amphetiminies and methamphetimines.
The best and trusted way is by chemical test
Yes. All variations of methamphetamine, amphetamine, methcathinone and ephedrine have very similar molecular structures, and they all break down to the same compound in your body. In fact, ephedrine is a necessary precursor in synthesizing the other three drugs. Urine tests, especially portable on-the-spot ones, are designed to detect this compound that these drugs break down into, not the drugs themselves, so whether you are on methamphetamine, amphetamine, methcathinone, or ephedrine or even pseudo ephedrine, you can test positive for amphetamines. If you do test positive and you know you were only on ephedrine or pseudoephedrine, you can request a re-test that involves a proper lab using blood or hair samples