Final answer:
Heroin can be detected in a urine toxicology screen typically up to 48 hours after the last use. The detection window can depend on various factors, with the correct answer being B. 48 hours.
Step-by-step explanation:
Heroin can be detected in a urine toxicology screen for usually up to 48 hours after the last use. However, the detection period can vary depending on several factors such as the amount used, the frequency of use, individual metabolism, and the sensitivity of the testing method. While heroin itself may not be detectable after this period, its metabolites, like 6-acetylmorphine, can sometimes be detected for a slightly longer duration. It's important to note that chronic or heavy users may have detectable metabolites for longer periods than occasional users.
Heroin is known for producing intense feelings of euphoria, but also poses high risks, including the potential for contracting infectious diseases like tuberculosis and HIV through intravenous use. The appearance of "track marks" might be an indicator of heroin use, especially in those who inject the drug frequently.
The correct answer to the question of how long heroin can be detected in a urine toxicology screen is B. 48 hours.