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Heavy amphetamine use
An alcohol urine test can detect it for a long period of time after use.
amphetamine use and abuse in the U.S. from the 1950s to the present.
Because an amphetamine increases the metabolic rate, it can be abused by athletes.
They use their long neck too see above and detect predators from 1km. (one kilometer) away
To cheet.
Methamphetamine breaks down into amphetamine in the bloodstream, just through a much quicker process than regular amphetamine, that is why it is stronger. Using methamphetamine and amphetamine together is not safe if you don't know how much amphetamine is getting into your bloodstream from the combination of the two.
You can't use spectrometers to detect black holes. Telescopes are the only way to detect them.
A swab test can detect marijuana in saliva for up to 24-48 hours after use. The detection window can vary depending on factors such as frequency of use and individual metabolism.
James V Spotts has written: 'Use and abuse of amphetamine and its substitutes' -- subject(s): Amphetamine abuse, Drug abuse
Heavy amphetamine use
Depending on how heavy of a user a person is it is approx 3-10 days without continued use obviously.