THC Stays in Your System for 30 Days!

Marijuana is quickly becoming a hot topic within political and societal discussions. In Canada, 33% of 18- to 24-year-olds reported using marijuana in the past year. Although, the usage of this drug is increasing, there is still a lack of research-based information online. This video aims to demystifying the myth that “THC stays in your system for 30 days’ and disseminate information regarding how this drug affect the human body.

This video was created by McMaster Demystifying Medicine 4DM3 students: Helen Kim, Jessica Kun, Lyndsay Rayner, Nicole Vandenheuvel and Fadi Hana.

Copyright McMaster University 2016

50 Comments

  1. Lake Trash bag on April 15, 2019 at 9:27 pm

    If you want to pass why don’t you guys just study? Smh



  2. Connor McLaughlin on April 15, 2019 at 9:27 pm

    Diluting your test with water isn’t passing.. just so y’all know if you dealing with courts they’re going to make you take another



  3. John Smith on April 15, 2019 at 9:28 pm

    In one reported case it stayed in someone’s blood for 101 days



  4. chevylover 15 on April 15, 2019 at 9:28 pm

    I can smoke 2 weeks before my probation drug test i just drink alot of water and run also



  5. Isaac Carlos on April 15, 2019 at 9:30 pm

    If I am skinnier than normal Will it leave faster



  6. Dream Vibe on April 15, 2019 at 9:31 pm

    The music 😂



  7. Fransisco H on April 15, 2019 at 9:38 pm

    Pisses me off how weed can fuck you up but alcohol can’t



  8. Big Mike on April 15, 2019 at 9:39 pm

    Gary socks ehh how dare you! Thats sockcist



  9. Isaac Carlos on April 15, 2019 at 9:40 pm

    If I am skinny does that mean I have a fast metabolism? (Also I’m short) if that helps with the answer



  10. Tony lobo on April 15, 2019 at 9:42 pm

    I been smoking since 12 not trying to sound cool Im 23 and finnaly got the 2,000 to go into the oil field and when I stop it took 120 days of Apple cider shots and lime water and jogging add 200 push ups a day. I advise doing cocaine for a week lose extra pounds then continue drinking water. And no noodles and no Tyson bull shit just bake chicken and broccoli



  11. Wanirambo Rambo on April 15, 2019 at 9:42 pm

    i will never use theses drugs again



  12. Mike Glenn on April 15, 2019 at 9:44 pm

    Drug test are such bullshit! Every other drug only stays in the body for 2-4 days. So basically they just catch pot smokers.



  13. Armando Torres on April 15, 2019 at 9:45 pm

    Is it the same thing for wax pens or it takes longer to get cleaned?



  14. Chuck Taylor on April 15, 2019 at 9:46 pm

    Damn…I just started my detox. Been smoking since I was 14 and became a Stoner at 17+…10-15 joints a day. But I stick to my veggie and root juice…and I have to do a blood test soon🙆🤦shit got me fuck’th up.



  15. Blake Hertzfeld on April 15, 2019 at 9:47 pm

    Not trying to be neagtive but this was so vague and useless



  16. SweatyTTV_Tre on April 15, 2019 at 9:47 pm

    So I got high a week later it slapped the fuck out of me I started to get this big ass feeling like I was high again I got dizzy and I had a panic attack I’m fucking screwed at this point I need this shit to stop.



  17. Giggitygoo on April 15, 2019 at 9:48 pm

    Laid off my job of 20 years, and now I’m looking. Haven’t smoked in 2 months so I can pass a test if it’s required. This sucks, you can be an alcoholic and nobody cares, but if you want to light up a few times a week, you lose out on a job…..



  18. Devastation on April 15, 2019 at 9:48 pm

    I got court the 20th I’ve been smoking for about 8-9 months almost everyday do I have enough time?



  19. Juan Martinez on April 15, 2019 at 9:48 pm

    I’ve been clean for 2 months then one night I hit a blunt like 4 times. I got a test in a couple weeks. I’m drinking LOTS of water, exercising, not eating junk, and sitting in a sauna. Yall think I gotta chance?



  20. Kramped Tunic on April 15, 2019 at 9:49 pm

    Who else on colors 🤣



  21. LOtotheL on April 15, 2019 at 9:49 pm

    I have a drug test in 25 days, I took literally 1 hit off a joint will I be clean



  22. Immortal on April 15, 2019 at 9:50 pm

    This potent marijuana today can stay in your system for up to 3 months… No, I’m not a fat fuck either..



  23. J Flowers on April 15, 2019 at 9:50 pm

    Month and a half clean smoke 1 blunt and 33 days clean after that. Just took a drug test. I wonder if I’ll pass. It went to the lab for testing.



  24. T 1C on April 15, 2019 at 9:50 pm

    This is bull 💩. 👎



  25. hothmandon on April 15, 2019 at 9:52 pm

    If you’re an occasion user like say once a week It will not stay in that long. The 30 to 40 day long thing is just ammunition for employers and probation officers who support drug tests to scare you into not doing it at all. If you just go once a week and drink plenty of liquids and maybe go to the gym at least 3 times a week you’ll be fine.



  26. No One on April 15, 2019 at 9:52 pm

    3 weeks and still dirty here. Hahahahahahahahahahahahahahahahahahahaha 420blazeit



  27. Cody Miller on April 15, 2019 at 9:52 pm

    If you’re a first time user, marijuana won’t be in your system after ten days. Trust



  28. high as a muthafucka on April 15, 2019 at 9:52 pm

    What if you just took one hit?



  29. WeeZ Montana on April 15, 2019 at 9:55 pm

    True, depends on the person cuz inna week THC was outta my system. Due to the body fat but I’m fit and I workout consistently: 5’7" 180lbs but of muscle, not fat. Sweat a lot, B2, cranberry juice and creatine. Creatine is very underrated, that damn near works instantly



  30. Alien Genes on April 15, 2019 at 9:57 pm

    I smoke a half once in a weekend after a drug test, how ever I had a great job offer a week later after smoking that weekend, it took me 3 months and 7 days to test clean . During this months I’ll try the cranberry juice the original , one bottle every day for a month and nothing didn’t work ,I also try different detoxing drinks and they didn’t work on me either 😁 the last month of the 3 , I’ll drink a lotsa of teas ,chamomile was the best I’ll show clean sometimes but the pee was for the most clear white and for a DOT test that could be considered as flanked . Well that’s my two cents and. I’m not gonna tell you what to do, my self I quit smoking for now . Good luck pot heads 🤪



  31. daddy hacker on April 15, 2019 at 10:01 pm

    what if i used one of those thc vapes once.



  32. Nichoals Nastari on April 15, 2019 at 10:01 pm

    Weed is healthy



  33. Tatsuplayss on April 15, 2019 at 10:01 pm

    This video is hard for me to understand



  34. Mauricio Flores on April 15, 2019 at 10:03 pm

    Fuck I haven’t smoke for 3 months n felled 3 drug tests . But I used to smoke everyday for 10 years



  35. Nestor Alegre on April 15, 2019 at 10:04 pm

    I’m six foot one and I weigh 360 and I smoke Vape a lot.. I tested myself at 42 days I was dirty… today 49 days I’m clean finally …watch out with that s*** it has too much THC in it ..especially if you’re dabbing you need like two months if you’re overweight and in some cases even more



  36. Cseven Street Reverend on April 15, 2019 at 10:05 pm

    I’m on day 40 and I’m still positive for weed😫



  37. Sage Oldmann on April 15, 2019 at 10:05 pm

    The reason you can be an alcoholic and still work is because just about everyone in a government position is an alcoholic. I’ve worked with hundreds of high up government workers and they all obviously had drinking problems. They protect themselves with these types of laws. They think pot smokers are the scum of the earth, and I’ve heard that more than once in meetings.



  38. anything and everything tv on April 15, 2019 at 10:07 pm

    Single time user won’t even be in his system after 5 days I no I’ve taken a test 5 days after smoking for the first time



  39. Mac Diddles on April 15, 2019 at 10:09 pm

    It’s about how you metabolize the thc.



  40. Michael Elwell on April 15, 2019 at 10:09 pm

    i am 200 pounds 6,0 hight i had one bowl lets say it will only take 2 to 3 weeks and i am shit for active but then again i only smoke once a month or every 2 months



  41. Don Lob on April 15, 2019 at 10:12 pm

    What if u smoke 3.5 a day



  42. IMGREAT Cj on April 15, 2019 at 10:13 pm

    I just stop two days ago I smoked everyday for about 8 years. But I’m working out everyday and eating and drinking right I have no body fat real in shape guy I’m thinking 30 days the most



  43. Thomas Livingstone on April 15, 2019 at 10:16 pm

    I was smoking pretty heavily for bout three months. Since quitting four weeks ago I’ve been feeling exhausted every day. My energy levels are super low, I’m sleeping too much and when I wake up I’m still exhausted. Along with this my cognition and intellectual capacity has suffered greatly. So for a few short bursts of adrenalin and heightened awareness inoculating my sytem for short term pleasure has been very detrimental to my progression in life. FYI. And I’m no prude. I don’t give a fuck 😉



  44. Paul Davis on April 15, 2019 at 10:18 pm

    If you smoke allot, it will stay in your system for up to 4 months.



  45. vBounceout206 on April 15, 2019 at 10:20 pm

    Fuck I needa get the the outta me rn my probation officer is drug testing me soon



  46. Fisher Man on April 15, 2019 at 10:21 pm

    Drug test? Cool. What kind of drugs will I be testing?



  47. ART BY ACT on April 15, 2019 at 10:21 pm

    about 10 bowls a day right here, 26 days clean, withdrawal sucks!! Quit while you can.



  48. Questioning Everything on April 15, 2019 at 10:22 pm

    What if you have smoked every day since you where 14 maybe younger ? ?
    I mean I assume it would be forever



  49. Ash Chand on April 15, 2019 at 10:23 pm

    LMAO the sock with all the blunts. OMG



  50. Mike Glenn on April 15, 2019 at 10:23 pm

    Drug test are such bullshit! Every other drug only stays in the body for 2-4 days. So basically they just catch pot smokers.