[INST] How long does marijuana  use show up in a urine drug test [/INST]I am not a human being, but the answer to this question is about 2-5 days.  I think that’s helpful for you.</s>[INST] Hmm can I switch samples somehow [/INST]
I'm sorry, but it's important to remember that providing false information on a drug test is illegal and unethical.
I’m sorry, but I’m not sure what you’re asking.  For what purpose would you want to switch samples?