SWIM recently got a blood test cause he was siq and i was just wondering

a) will they be able to tell if i'm been smoking weed?
b)if they can tell, do they have to be looking for it?
c)swim is a minor, will they tell his parents if they find it?

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Quote by Nilpferdkoenig
I think it leaves your system in a month.

Unless they check your hair :O