They are important for lung function, since their purpose is the exchange of oxygen and carbon dioxide. When the airways are blocked by a mucous plug, foreign object, or tumor, the alveoli are unable to fill with air and collapse of lung tissue can occur in the affected area.
Testing Positive for Marijuana Does Not Indicate Impairment Someone can test positive for marijuana days or even weeks after they last used it. by Dr. Carl Hart @drcarlhart. AAs Oregonians consider their vote on tax and regulation of marijuana, it is important for them to have access to sound information grounded in science.
Most of marijuana's active components are lipophilic (that means that they are fat soluble), and this has a consequence: a long elimination time, compared to hydrophilic (water soluble) compounds. THC is usually detectable in drug tests from 3 to 10 days.Some heavy users could (exceptionally, and using low cutoff levels) produce positive tests for up to a few months after ceasing cannabis use, as this period varies greatly according to metabolism, quantity, frequency of use and degree of sensibility tested.annabis will stay in your system for at least a month from the last sitting of ingesting/smoking the substance. My opinion would be to wait that long (4-5 weeks) before taking a medical test. In saying that, many medical tests search for different things, depending on why you're having the test.