While cannabis is now legal in many states including California marijuana drug testing is still common especially urine testing pre-employment as well as workplace drugs tests and the possibility of getting drug tested at the side of the road.
One
question that people often ask is whether it is possible to feel the effects of
cannabis from secondhand smoke. And whether it might even be possible to fail a
drug test from second-hand marijuana smoke, even if you have not smoked
marijuana yourself.
Can Secondhand Smoke Exposure Cause You to
Fail a Drugs Test?
While
technically it may be possible to fail a drugs test from secondhand smoke, in
reality, it’s very unlikely. Drugs tests have a cut off level and in part, this
is designed so as people will not test positive due to second-hand exposure. If
levels are set too low people could claim passive exposure or in the case of
opiates use what is known as the poppy seed defense, claiming they tested
positive due to eating poppy seeds rather than taking drugs.
The
National Institute on Drug Abuse has published a marijuana research report
which looks, amongst other things, at the effects of secondhand exposure to
marijuana smoke including the possible psychoactive effects and the possibility
that someone could fail a drug test from secondhand smoke.
NIDA.
2020, April 8. What are the effects of secondhand exposure to marijuana smoke?.
Retrieved from
https://www.drugabuse.gov/publications/research-reports/marijuana/what-are-effects-secondhand-exposure-to-marijuana-smoke
on 2020, July 28
They
cite research finding that exposure to secondhand cannabis smoke in a
ventilated space for 3 hours was sufficient to show the presence of THC in the
blood and urine of non-smoking participants. But that the levels of THC were
not enough to produce positive results on a drug test. This would be akin to
sitting in a coffee shop with friends who were smoking for several hours but
not actually smoking yourself.
However,
when cannabis potency was high enough and smoked in a confined unventilated
space, passive smoke exposure to marijuana was sufficient to produce positive
drug tests from nonsmoker urine and participants reported a mild high. It is
worth noting however that only one of six participants showed high enough
levels to test positive and that even lower levels of THC could not be detected
after 24 hours.
Although
this evidence suggests that it could be possible to fail a drugs test due to
the THC in your system from inhaling secondhand pot smoke secondhand exposure
is still deemed highly unlikely to lead to impairment or the failing of a
workplace drug test, even if you were stuck in an enclosed place with a heavy
smoker.
This
is due to the fact that very little THC is exhaled by marijuana users and so
you would have to be in a room with a number of cannabis users all smoking
cannabis with high THC concentration before passive exposure would cause you to
test positive for THC.
If
you use cannabis medicinally for pain management or other reasons you may wish
to choose a medical marijuana strain with lower levels of THC and higher levels
of CBD. CBD doesn’t produce any psychoactive effects and does not show up on a
drug test result meaning the likelihood of failing a drug test from passive
exposure would be even more minimal.
If
you need a medical marijuana card you can apply for a letter of recommendation
online today, risk-free, and receive your results in minutes.
Can You Get High From Secondhand Smoke?
While
the research mentioned above suggests that under certain conditions non-smokers
reported feelings of a mild high and showed slight cognitive impairments after
intense exposure to passively smoked cannabis, again the amount of THC being
exhaled is unlikely to get you high.
Even
in an intentional ‘hot box’ the additional high being felt is more due to the
elevated levels of CO2 and the slight lack of oxygen. So while exposure to
smoke of any kind isn’t going to do you any good and children certainly
shouldn’t be exposed in reality occasional exposure is unlikely to either get
you high or do you any harm.
If
you are looking to get high without smoking cannabis edibles are a better
option. Just be aware that the effects of eating cannabis products take longer
to feel and tend to be stronger in relation to the amount of THC you have
consumed.
Choosing
medicinal cannabis products can be a good option as they are well regulated. If
you need a medical card you can apply online and get a doctors recommendation
letter for many conditions including anxiety, pain, insomnia and nausea.
Should You Avoid Inhaling Secondhand
Marijuana Smoke?
While
it seems unlikely that you would fail a urine drug test or even an oral fluid
test from passively smoked marijuana, it is one of the common myths that has
just enough of an element of truth to make it stick, there are potentially
other effects of secondhand marijuana smoke that you should be aware of.
Not
enough research has been done on the effects of secondhand exposure to pot
smoke. A lack of funding combined with marijuana laws in individual states not
overriding the fact that marijuana is illegal at the federal level means that
there has been limited research into the effects of cannabis consumed let alone
passively.
However
a study on rats suggests that the negative effects of second-hand cannabis
smoke may be just as damaging as tobacco smoke. One study on rats showed a
comparable effect on blood vessel dilation following exposure as that of
exposure to second-hand tobacco smoke and it is known that cannabis smoke
contains tar and other toxins.
More
research needs to be done to be sure of the effects but it would appear to be
advisable to avoid secondhand smoke as much as possible especially for children
and those with respiratory conditions at least until more is understood about
the possible long term effects.
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