Detection of urinary benzoylecgonine indicates exposure to which drug?

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Study for the Ciulla Clinical Chemistry Test. Enhance your knowledge with flashcards and multiple-choice questions. Prepare for the exam with comprehensive study materials and detailed explanations for each question.

Multiple Choice

Detection of urinary benzoylecgonine indicates exposure to which drug?

Explanation:
Benzoylecgonine in urine points to cocaine exposure because it is the primary metabolite formed when cocaine is processed in the body. Cocaine is rapidly metabolized, and benzoylecgonine remains detectable in urine longer than the parent drug, which is why urine screens look for this metabolite. A positive benzoylecgonine result specifically indicates cocaine use. The other substances aren’t metabolized into benzoylecgonine, since codeine, amphetamine, and propoxyphene have different metabolic products.

Benzoylecgonine in urine points to cocaine exposure because it is the primary metabolite formed when cocaine is processed in the body. Cocaine is rapidly metabolized, and benzoylecgonine remains detectable in urine longer than the parent drug, which is why urine screens look for this metabolite. A positive benzoylecgonine result specifically indicates cocaine use. The other substances aren’t metabolized into benzoylecgonine, since codeine, amphetamine, and propoxyphene have different metabolic products.

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