Methamphetamine (mAMP): Desoxyn
An addictive stimulant that is closely related to amphetamine, but has longer lasting and more toxic effects on the central nervous system. It has a high potential for abuse and addiction. Methamphetamine is very rarely prescribed, but there is a form (stereoisomer) of methamphetamine that is used in the Over-the-Counter Vicks Inhalers. Most positives are the result of illegal use; the drug is made illegally from pseudoephedrine.
Drug Class
Trade Names
Desoxyn, Methadrine
Street Names
Speed, meth, chalk, ice, crystal, glass, crank
Effects Of Use
Increases wakefulness and physical activity and decreases appetite. Chronic, long-term use can lead to psychotic behavior, hallucinations, and stroke.
Approximate Detection Time
Urine: 2-4 days

Oral Fluid: 24-72 hours
Urine Cutoff Levels
Immunoassay (screening): 1000* ng/ML (500 ng/mL is available)

GC/MS (confirmation): 500* ng/mL; MUST ALSO HAVE AT LEAST 200 ng/mL of amphetamine in the urine to report a viable methamphetamine positive
Primary Antigen
Common Cross-Reactants
Common cross-reactants: metabolites of Ephedrine, Ranitidine (Zantac), and MDMA. In addition, there are several therapeutic agents, such as Benzphetamine, that metabolize to methamphetamine (and amphetamine) in the body and will produce positive drug test results. It is also important to note that amphetamine is a metabolite of methamphetamine and will appear in the urine of a person who has taken methamphetamine. About 4-7% of a methamphetamine dose is broken down to amphetamine by the body.

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