Doctor insights on:
How Long Does Second Hand Smoke Stay In Your System
It doesn't: It is not that smoke stays in our "system" (whatever that is, it really isn't a medical term), it is the damage that it does that remains. Some of the elements of tobacco smoke - the "tars" are organic hydrocarbons that may actually persist in our body in fat cells and elsewhere - may stay for a long time. The nicotine and its metabolite cotinine remain for a few days only. The damage may persist ...Read more
Second hand tobacco smoke can be irritating to the lining of the ear's normal draining tube (the Eustachian tube). Some estimate that exposure to second hand smoke is responsible for as many as 2 million extra ear infections each year in the US. Reducing exposure ...Read more
That would require: a heavy exposure. Length of time one has been getting second hand exposure and amount of exposure would be variables. Can't determine with available information. ...Read more
Depends: This would depend on how frequent/how long and how close the exposure was. If it was transient, like a few minutes in the same room, it might not be detected at all.(but might).If you spent enough time around a chronic smoker it could hang around in your system for a month. ...Read moreSee 1 more doctor answer
A few hours: The half life of Cocaine (meaning the point at which half of the Cocaine you originally had in your body is gone) is about one hour. How much you have in your body is thus equal to 1/2 to the x power where x is number of hours. So at 3 hours you would have 1/(2x2x2) = 1/8th the original amount. For monitoring purposes (drug screens) this means most tests look at metabolites (which last longer). ...Read more
Marijuana in Body: The active ingredient in marijuana is THC. The half-life (meaning how long it takes for 1/2 of it to "disappear") is about 20 hours. It can settle in fat cells and take time to get out of the body. Generally after 2-weeks it is all gone, although there have been reports of up to 30-days. ...Read more
One use 2-3 days: Depends on how much smoking you were doing for how long, and while weight doesn't matter per se, since thc metabolites accumulate in fat, it does depend on how much fat there is. People who smoke marijuana regularly can stay positive for 3 weeks +, and I have seen some heavy regular smokers stay positive for 2 months. You can buy your own test kit at any pharmacy and see for yourself. ...Read more
Cannabis: Single use marijuana may be found in blood for 12 to 24 hours. Regular use marijuana may be found in blood for 2 to 7 days. Single use marijuana might be detected in urine for 1 to 7 days (or more) and regular marijuana use can be detected in urine for 7 to 100 days (longer periods have been reported though). ...Read more
That depends.: Single use marijuana may be found in blood for 12 to 24 hours. Regular use marijuana may be found in blood for 2 to 7 days. Single use marijuana might be detected in urine for 1 to 7 days (or more) and regular marijuana use can be detected in urine for 7 to 100 days (longer periods have been reported though). It can remain in hair follicles for months. ...Read more
Which "meth???": Methamphetamine is a short-acting drug, but it has longer acting metabolites which are what are measured in urine. After a single dose, it's half-life is about 4 hours, but metabolites can be found for 2-3 days. After regular heavy use, it can be detected for 5-7 days. Methadone (also called meth) lasts for 3-5 days, and in long-term use metabolites can be detected for weeks. ...Read more
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