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A Breathalyzer for Marijuana

09/03/2019 11:16 AM

The University of Pittsburgh has announced that researchers have successfully demonstrated a breath test for marijuana. The prototype apparatus is similar to that used to detect alcohol and detects THC in a breath sample. If further research is successful and the device is commercialized, it could fill law enforcement's need for on-the-spot toking-and-driving detecting.

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#1

Re: A Breathalyzer for Marijuana

09/03/2019 12:35 PM

That also must mean that some scale be established for the legal limit for driving while stoned.

I see a giant disaster/discrepancy if these laws are left for individual states to enforce. Legislatures in many states whose voters have voted for pot have repeatedly disregarded the will of the voters.

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#2
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Re: A Breathalyzer for Marijuana

09/03/2019 3:01 PM

That would be true if legislatures had to be either legal or logical.

We both know that neither is gonna happen.

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#7
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Re: A Breathalyzer for Marijuana

09/03/2019 5:40 PM

You'd think that some of these pot companies would just purchase enough lobbyists and legislators to assure legalization, like big oil, pharma, coal, hospitals, insurance companies and the rest of those who don't like to earn money the old fashioned way have done.

The NRA is a great example. $30 million in one candidate's pile.

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#3
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Re: A Breathalyzer for Marijuana

09/03/2019 3:17 PM

The next research needed should be about what constitutes an "impaired" reading on the breathalyzer. This will inevitably vary from state to state.

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#6
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Re: A Breathalyzer for Marijuana

09/03/2019 4:10 PM

This will probably also vary from individual to individual. The mild paranoia marijuana can induce might make a few more attentive in their driving. Wouldn't that be an interesting paradox?

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#8
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Re: A Breathalyzer for Marijuana

09/03/2019 5:56 PM

The Washington State Patrol did a small study ~1970 that found just that for small amounts of marijuana, but not for large amounts. I don't know where the border was between small and large.

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#4
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Re: A Breathalyzer for Marijuana

09/03/2019 3:22 PM

May I suggest the Dorito test?

The officer opens a fresh bag of Doritos in front of the driver being evaluated with the instructions that they must not eat any of the Doritos within a two minute interval. Failing that results in a charge of DUI.

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#5
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Re: A Breathalyzer for Marijuana

09/03/2019 3:36 PM

A mere doddle for potheads with the ability to maintain.

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#20
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Re: A Breathalyzer for Marijuana

09/05/2019 9:54 AM

Another "test" may be that the officer hands the breathalyzer tube, held by a roach clip, to the suspect while saying "Duuuuuude, this is some good sh_t." If the suspect sucks on the tube (instead of blowing) he just may be impaired.

Might be considered entrapment though.

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#10
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Re: A Breathalyzer for Marijuana

09/04/2019 5:40 AM

"Will of the people?What's that?"

"The avalanche has started, it is too late for the pebbles to vote."
Kosh, Believers(From Babylon 5)

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#19
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Re: A Breathalyzer for Marijuana

09/05/2019 12:57 AM

States rights guarantee that an individual state can create it's own mandates. Our rights and how we use them dictate our sovereign citizenship.

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#9

Re: A Breathalyzer for Marijuana

09/03/2019 10:54 PM

My concern is for the millions of people taking CBD oil for pain relief which, at current methods of processing, will inevitably contain trace amounts of THC. My current supplier of medical CBD oil states the active ingredients to be 25 parts CBD: < 1part THC. I have never experienced any kind of "high" with it but it has severely limited my trips to the USA. I have no problem buying Hemp oil for sealing my wood deck at $55/Gal but Marijuana oil has to be dispensed through licensed outlets in no more than 50ml bottles at $100 each. Go Figure! I am looking forward to the day that legislators learn the difference between the components that inebriate and those that heal.

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#11
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Re: A Breathalyzer for Marijuana

09/04/2019 1:38 PM

If you had a poppy roll that morning, your problems might multiply.

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#12

Re: A Breathalyzer for Marijuana

09/04/2019 1:54 PM

Marijuana should never have been classified as a dangerous drug. That was a racist act.

Marijuana Legalization Is a Racial Justice Issue | American Civil...

It should be treated just like alcohol and not a drug.

Regulate it, tax it, enforce it but don't put me in jail just because I had a toke or two.

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#13
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Re: A Breathalyzer for Marijuana

09/04/2019 6:00 PM

A good number of states are already experimenting with this now. It will remain to be seen if there is a significant cost to society with the legalization of marijuana.

I wouldn't trust a single thing that the ACLU has to say. If there ever was an organized subversive force in the U.S., they are it.

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#14
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Re: A Breathalyzer for Marijuana

09/04/2019 6:48 PM

Believe what you want.

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#15
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Re: A Breathalyzer for Marijuana

09/04/2019 6:59 PM

Likewise.

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#16
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Re: A Breathalyzer for Marijuana

09/04/2019 8:34 PM

I wouldn't say the ACLU is subversive but I fully admit that article made some very bad word choices. Using the verb "must" without proposing a consequence for violating the imperative weakens the imperative. {If there is no consequence, why must anyone comply?}

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#34
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Re: A Breathalyzer for Marijuana

03/21/2025 10:18 PM

Back in 2000, friend of mine had a wedding in Colorado Springs, CO.

while there I visited Garden of the Gods park. Upon leaving I came across Monitou Springs, it was quaint little stop with nice shops a real relaxing time.

4 years later, I visited him again, and did it change, when I left Garden of the Gods, and Manitou spring change to head shops, pimply face unemployed musicians, tents set up next to sidewalks, unsupervised little kids with tattered cloths and dirty faces running around.

rather sad, but believe what you want.

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#17

Re: A Breathalyzer for Marijuana

09/04/2019 10:29 PM

..."Fatal crashes involving drivers who tested positive for THC have increased. Some studies indicate that more people with “detectible” levels of THC in their bloodstreams were involved in fatal accidents after legalization. However, as discussed below, the mere presence of THC does not necessarily indicate marijuana impairment. Furthermore, regarding fatal crash rates overall, at least one study found no significant annual changes in crash fatality rates for Colorado and Washington when compared to 8 control states."...

..."THC presence does not necessarily indicate impairment. The human body processes THC differently than alcohol. As the AAA noted in a major 2016 study, THC can remain in a user’s blood or urine for weeks after they consume marijuana, depending on various factors. Furthermore, THC levels spike immediately after consumption, but decline to low levels very quickly – long before impairment ends. It is therefore not currently possible to accurately determine when a user consumed marijuana based on the THC levels in their body.

Additionally, the length and intensity of intoxication depends not only on the strength of the marijuana product, but also on how the drug is consumed. Inhaling marijuana typically causes onset of intoxication within five minutes, with symptoms of intoxication lasting a couple of hours. On the other hand, ingesting marijuana (e.g. “special brownies”) can delay onset of intoxication between one to four hours, and intoxication can last much longer than that.

These and other reasons led the AAA to conclude that “simply detecting any THC does not therefore indicate impairment.”

A U.S. National Highway Traffic Safety Administration (NHTSA) report came to similar conclusions, noting that most studies have found that levels of THC do not closely correlate to the degree of impairment – and that often peak impairment occurs when THC levels have already begun to decline.

In sum, THC detection in a user post-accident does not necessarily mean that marijuana impairment contributed to a traffic accident."....

...."Some states enforce per se limits on THC concentrations. Nonetheless, several states currently enforce per se limits to determine marijuana impaired driving, typically 5 ng/ml of THC, though the limit in some states is as low as 1 ng/ml. Operating a vehicle with blood THC concentrations above the per se limit is illegal. Colorado enforces a “reasonable inference” standard, in which any THC concentration above 5 ng/ml can be inferred to indicate impairment. (Other states enforce a zero-tolerance policy for THC – any level of THC is prohibited.)

However, per se limits have been criticized for their potential to incriminate drivers who are not impaired, since THC can persist for long periods of time in a user. Unfortunately, the opposite may also be true: impaired drivers may not always be prosecuted, since high levels of THC quickly leave the bloodstream before impairment subsides. One study found that only 10 percent of its participants would have been prosecuted for impaired driving, even though many self-reported recent marijuana use.

Furthermore, the time between a roadside traffic stop and subsequent blood testing could take hours, making potential impairment difficult to measure since THC levels might have declined long before testing.

The AAA has therefore concluded that “a quantitative threshold for per se laws for THC following cannabis use cannot be scientifically supported.”"...

https://www.iii.org/article/background-on-marijuana-and-impaired-driving

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#18

Re: A Breathalyzer for Marijuana

09/05/2019 12:10 AM
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#21
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Re: A Breathalyzer for Marijuana

09/05/2019 5:10 PM

For whatever reason there was no mention of a fellow by the name of Randolph Hearst (I believe I have his first name correct) who owned a newspaper in San Francisco. The fellow had a huge investment in timber, and hemp was a very big threat to him. Look it up and see what you find. If I'm wrong, I apologize......but I believe that the fact was that you could grow maybe four crops of hemp a year (fast growing) and produce lots of paper from it and considerably cheaper as opposed to using wood pulp. His newspaper used lots of that stuff....

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#23
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Re: A Breathalyzer for Marijuana

09/05/2019 7:49 PM

For what it's worth.

Hemp , Hearst , and Prohibition

Before Anslinger took the helm of the Federal Bureau of Narcotics in 1930, marijuana was called Indian Hemp or Cannabis India. In a political spin move, Anslinger pointed to immigrant Mexicans and blacks as the prime users of illicit cannabis, and he began publicly referring to it as marijuana (the Mexican name) as a weasel word to associate it with low-status or criminal immigrants.

Many laws had been passed making cannabis illegal decades before the alleged conspiracy between Hearst, DuPont and the others. California had banned non-prescription cannabis in 1913 as part of a campaign against drugs that was largely anti-Chinese; New York City in 1914; Texas in 1915. Enforcement was almost entirely against Mexican and black communities.

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#24
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Re: A Breathalyzer for Marijuana

09/05/2019 7:49 PM

You are mostly correct. Wikipedia has a nice synopsis of legal cannabis in the USA. His full name was William Randolph Hearst. He and his newspaper empire played a pivotal part in making cannabis a controlled substance. However, it wasn't because it would undercut his timber industry. Cheap hemp pulp to make newsprint would've reduced one of the major costs in printing. His timber production was dwarfed by his timber consumption in order to print.

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#22

Re: A Breathalyzer for Marijuana

09/05/2019 6:33 PM

Since legalization in Canada was almost a year ago we should soon get some statistics on impaired driving involving cannabis.

The advice that's been given is not to drive within 4 hours after smoking pot. And really emphasized, not to combine marijuana and alcohol. Apparently that's a worse impairment then either separately! Any reasonable adult would take that advice seriously...

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#25

Re: A Breathalyzer for Marijuana

09/06/2019 12:11 AM

Currently, some marijuana dispensaries are allowing perspective customers to test samples of products in house.

Special sections within the same occupied space as over the counter sales offer both edibles and inhalant products.

Sales stores, positioned at locations that lack the services of public transportation, require consumers to self ambulate. Thus, those that sample then purchase products, leave the bounds of the property under their own power and accord.

There currently is no regulation in place to govern how many products, at a given visit, a potential customer can sample.

This is the same type of exploited loophole that purveyors of brewed and distilled alcohol enjoy.

A saloon sells drinks to a patron, that person then drives and is later detained by law enforcement for an infraction. The establishment that sold the device, continues to operate without impunity.

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#26
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Re: A Breathalyzer for Marijuana

09/06/2019 7:19 PM
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#27
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Re: A Breathalyzer for Marijuana

09/09/2019 8:44 AM

That's because the staff at the <...establishment...> have no control over the individual's behaviour after the consumption has taken place; with it comes a lack of liability.

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#28

Re: A Breathalyzer for Marijuana

09/09/2019 8:44 AM

Just think a moment: these <...researchers...> can do such things legally.

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#29

Re: A Breathalyzer for Marijuana

09/09/2019 9:42 AM

Consider the fact that they can analyze the atmospheric gas composition form planets billions of miles away.

Tell me they cannot analyze the atmosphere inside of a car remotely with the windows closed,traveling at interstate speeds from a remote sensor.

The technology is there,and they may be using it.

Who would know?

A random checkpoint,or a planned stop for a detected vehicle?

What are the over height detectors really seeing?

"You better be good,cause Santa Clause is watchin' you." "He's everywhere..he's everywhere" Lighten up!

https://www.youtube.com/watch?v=mER2fGuSqF8

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#30

Re: A Breathalyzer for Marijuana

03/25/2021 1:14 PM

It will take a long time for a breathalyzer or any other product to be commercially possible to produce. It will take even longer to put regulations in place on limits. A lot of research will need to be conducted to see the correlation between how impaired is a driver and the amount of marijuana he/she consumed. I am sure each of us is different and reacts differently to this substance. It will be hard to set limits, also will there ever be political will for such change.

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#31
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Re: A Breathalyzer for Marijuana

03/25/2021 3:37 PM

I just read on some research that natural supplements can help reduce THC amounts in your body if consumed daily. I would not worry at all about this, too many unknown variables.

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#32

Re: A Breathalyzer for Marijuana

02/03/2025 12:29 AM

I think a Breathalyzer for marijuana is an interesting idea, but honestly, I'm not sure how accurate they'll be just yet. The science behind detecting THC levels in breath is still catching up, and it's a bit tricky since THC isn't the same as alcohol when it comes to how it stays in your system.

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#33
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Re: A Breathalyzer for Marijuana

02/06/2025 12:58 AM

Right now, they’re trying to measure things like how much THC is in your saliva or breath, but it’s still a work in progress. If you’re curious, you might want to read up more on it at places like thc a flower. They dive deep into how marijuana affects your body.

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