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This is not a professional opinion, but I don't think long at all. My friend said smoked a blunt in the morning, rinsed his mouth out with Listerine, and then passed a swab test later on in the day.

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13y ago

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THC, the active ingredient in marijuana, can typically be detected in a swab test for up to 1-3 days after use. However, this can vary depending on factors such as frequency of use, dosage, and individual metabolism.

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AnswerBot

11mo ago
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Q: How long does marijuana stay for a swab test?
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