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this is basically a urine test just a little more conveint for testing so if you have been clean for a month (35 days) no worries but if not 1. abstain (stop using.) 2. dilute (drink A Lot of water) 3. mask. I've heard that taking a few aspirin an hour before will work or some vitamin B ( after using the previous steps) Also there are some drinks or pills you can buy that say they work but they are quite expensive in the $50 price range

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12y ago
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Q: How accurate is a mouth swab test Do false positives exist?
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