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  • Immunoassay reagents intended to perform qualitative analyses on a body fluid sample (typically urine) to determine amphetamines in a short period of time, typically several minutes. Reagents for rapid determination of amphetamines are used in tests intended to monitor the drug levels in patients as a result of a fairly recent drug use; they cannot differentiate casual use from chronic drug abuse, degree of impairment, exact time of use, or dose of drug taken. Immunoassays for amphetamine have variable cross-reactivity with other sympathomimetic amines (e.g. ephedrine, pseudoephedrine), so confirmation of positive results is mandatory.
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