I was first introduced to the article entitled Observations on the Habilitation of Children with Cortical Visual Impairment as a subscriber to the Journal of Visual Impairment & Blindness (JVIB).
Best Answer: Marijuana remains in your system for about 14 to 30 days. However, hair follicle tests typically detect THC (marijuana) for up to 3 months after you have quit using. Since THC (marijuana) stores itself in your fat cells, exercise -- especially fat-burning exercise like weight training and intense cardio -- can help get it out of your body faster.
1 Blood testsâ effective ranges will vary based on the half-life of the drug but are generally sensitive for about one to three days.[1] Marijuana edibles will linger longer, for up to seven days.  Saliva tests range depending on the drug, but most can detect drugs used in the last 12 hours to three days.