American Board of Psychiatry and Neurology (ABPN) Practice Exam

Question: 1 / 1275

On a urine toxicology screen, how long can heroin be detected?

12 hours

48 hours

72 hours

Heroin can typically be detected in urine toxicology screens for up to 3 days (72 hours) after use. This detection window can vary based on several factors, including the individual's metabolism, the frequency of use, and the amount used.

Heroin is metabolized quickly in the body; however, its primary metabolite, 6-monoacetylmorphine (6-MAM), and another metabolite, morphine, can linger in the system longer, allowing for a detection window that extends up to 72 hours.

Detection beyond this period, such as 8 days, is less common unless there are specific circumstances, such as chronic use, significant dosages, or impaired renal function, leading to extended elimination times. Therefore, while heroin can be detected within this timeframe, the most accurate and widely accepted detection window in standard urine toxicology is indeed up to 72 hours.

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