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For urine, saliva and blood test, marijuana (THC) can be detected from 2 hours to 8 days. For hair sample or nail clippings from 90 to 180 days.

Factors affecting levels of retention:

– Usage level;
– Your weight and age;
– Metabolism;
– Route of administration (oral, injection, inhalation);
– Level of physical activity.

Marijuana is far from harmless. It causes a profound and incurable psychological dependency, affects the judgment markedly, and is so incapicating that it is much more dangerous than alcohol. More importantly, marijuana is a “gateway” drug. Go past that despite the repeated warnings from those who survived its abuse and you will try anything that is more habit forming next.

Please consult Narcotics Anonymous for more detailed information about the dangers of drug abuse.

To remove the nerve dentist has to use instruments called ‘reamers’, they are like little files that are put into your root to remove the nerve. Your dentist has to start with the smallest reamer and then keep going up in size. So what normally happens is once the numbness wears off, the tooth tends to get worse before it gets better. Once you have the second stage of your root canal complete, again you might experience some mild pain for a few days but then it will settle down completely. Root canal has a very high success rate.

I would advise that your doctor will be the right person to answer this.

My sister has the same problem with planes but on one trip to see my relatives in Spain an air stewardess came to us with a solution. You may feel slightly stupid but my sister swears it works for her. You take 4 plastic cups and sum wet tissue or something similar. Put the wet tissue into two of the cups then place the empty cups inside of the cups with the wet tissue in them then place them over your ears as you take off and just before landing-but remember not to take them away from your ears until the cabin doors have opened due to the pressure. Hope it works for you.