How can you tell if someone has been using marijuana?

Answer 1

Urine Analysis, Hair tests, Spinal tap, and checking for dilation of the pupils are a few ways.
Your pupils DO NOT dilate from getting high off marijuana. However your eyes will become red.

Answer 2

To tell if someone is high at the moment, their eyes are red a glossy but not all the time and not for everybody, but for the most part they are. They seem to be laughing a lot more and a lot harder then you or the person they are with. Just because they are doing that though, doesn't mean that they are stoned. Balance doesn't change as much as people say it does, you might get a slip or two where you lose your balance and either fall over or almost fall over but its not like that is the main point of being high. Eventually, after a while smoking they get hungry and then tired. The cycle is happy, hungry, tired. It's simple. Pupil size doesn't change every time you smoke and for some people their eyes stay the same, so that's not what you want to look for.

Answer 3

Marijuana is a schedule 1 drug, by the DEA; which means that there is no medicinal value. A person under the influence of marijuana may have red eyes, personality changes, and an odor that resembles that of a skunk.

Answer 4

Effects that could indicate that someone is under the influence of marijuana include bloodshot eyes, increased giggling and laughing, slowed speech or movement, displaying problems with memory and problem-solving, increased hunger ("the munchies"), reported distorted perceptions (sights, sounds, time, touch), complaints of dry mouth or "cotton mouth," reported feelings of relaxation, or reported feelings of anxiety or paranoia.

Answer 5

Red eyes. Herbal breath. Cant spit due to "cotton mouth." hungry. tired. slow speech. possible laughing. possible muscle spasms. all sorts of things, but all of those have excuses and can be easily hidden.

Answer 6

Easy! Get a urine test suddenly and make them pee in a cup. test it. Or, if your trying to secretly find out, smell their clothes(i know it's kinda creepy but you can't mistake that smell!). you could look into their eyes and if they're glassy and blood shot that could be a warning sign, cotton mouth, realllly hungry, finds retardedly stupid things funny. these are all some very good signs, oh, and tired!

Answer 7

You won't know unless they take it to an extreme.

There are certain behaviors and characteristics that come from extended use over time; but these side effects are subtle and will not show up immediately or from limited use.

Long term users tend to become slow talkers; often have a hazy or very mellow attitude and slowly lose interest in improving their life. The classic "stoner" mentality that takes over is often marked by a lack of ambition and a very noticeable drop in intelligence.

Most long term users will deny any of these symptoms exist; however, as an outside observer that has watched many pot smokers deteriorate over the years, i can only say: by the time they have these symptoms, they aren't smart enough to know what is happening to them anymore.

I've watched relatively successful people throw their life away and lose all interest in doing anything but smoke marijuana and they simply never really recover.

The worst case is when they finally trick themselves into believing that they are actually getting smarter from using it; in which case they may keep having 'revelations' that they claim are 'genius' and in reality they are just remembering things they already knew. When you watch that pattern play itself out over and over again first hand; you get to see the real damage from long term marijuana use.

Also; if they are a chronic abuser, their hygiene may become noticeably less important to them, at which point you can typically start to smell the marijuana in everything they wear since it doesn't get washed as often.

Answer 8

they can do a urine test, blood test, or a hair sample test. It can stay in your system for up to 2 months. Most of it is stored in your liver.