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Heroin leaves your system very quickly. On the safe side I'd say a week, but some reports state that 12 hours is enough to test negative for opioids since discontinuation of use.

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14y ago
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13y ago

4 to 6 days. This can very due to strenght of substance, how much and how often you use and body weight/mass/fat %.

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14y ago

it usually last 3-5 days after ingesting

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Q: How long will herion smoked stay in your system to pass a drug test?
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If you only smoked one blunt with someone how long would it be in your system?

the drug would stay in your system for 10 days.


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