We recommend using artificial urine prior to that of a buddy. For starters, even if your buddy has smoked marijuana a couple weeks prior to and has forgotten, then you might find a favorable outcome. Secondly, bacteria develop on the face of urine. If abandoning uncooled for at least one hour, it may begin to become bad; a very clear sign that it's not left your body.
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We recommend using artificial urine prior to that of a buddy. For starters, even if your buddy has smoked marijuana a couple weeks prior to and has forgotten, then you might find a favorable outcome. Secondly, bacteria develop on the face of urine. If abandoning uncooled for at least one hour, it may begin to become bad; a very clear sign that it's not left your body.