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 β€œTHC 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. Nestor Alegre on May 22, 2019 at 7:29 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



  2. ProGaming on May 22, 2019 at 7:30 pm

    I smoked around 2-3g’s on March 1st. I’m slim, work out and play footie. Haven’t touched it since, will I be okay for a drug test next week?



  3. Mosh Pit on May 22, 2019 at 7:34 pm

    I keep saying this to people. It’s a fucking plant. Get over it.

    Can you image the stupidity of setting legality to a living thing? Something that grows out of the ground? Come on man… excuse me, I just had a few beers and scotch and I have to go beat the shit out of my wife and kid, after I smoke my cigarette, while sucking down enough sugar from soda to destroy my insulin production and pancreas.



  4. anything and everything tv on May 22, 2019 at 7:34 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



  5. Banghowdy08 on May 22, 2019 at 7:35 pm

    Can you smoke weed in Chester zoo ?



  6. Xander Cross on May 22, 2019 at 7:36 pm

    Smoked weed for the first time and now I have a drug test in a week. I weigh 160.ib and am intermittent fasting/working out everyday leading up to the test. How screwed am I?



  7. Mosh Pit on May 22, 2019 at 7:37 pm

    Hypocrisy runs deep



  8. Chuck Taylor on May 22, 2019 at 7:38 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 soonπŸ™†πŸ€¦shit got me fuck’th up.



  9. Tony lobo on May 22, 2019 at 7:41 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



  10. Giggitygoo on May 22, 2019 at 7:44 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…..



  11. Grow Hackerz on May 22, 2019 at 7:44 pm

    what if i used one of those thc vapes once.



  12. Monique Suarez on May 22, 2019 at 7:44 pm

    The first ever try of yours, how long it would take to rid off of your body?



  13. WeeZ Montana on May 22, 2019 at 7:50 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



  14. ART BY ACT on May 22, 2019 at 7:50 pm

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



  15. Michael Elwell on May 22, 2019 at 7:51 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



  16. J Flowers on May 22, 2019 at 7:51 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.



  17. Questioning Everything on May 22, 2019 at 7:53 pm

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



  18. wasa jazz on May 22, 2019 at 7:54 pm

    I smoked once last month, and ate a small piece of an edible and that was 25 days ago. Took a drug screen for a very good job today. I hope i passed.



  19. Emily_thebasegod on May 22, 2019 at 7:55 pm

    Someone help me I have a drug test coming up not sure if it’s a urine thing but how can I get the weed out my system asap?



  20. MrSpaceballoon on May 22, 2019 at 7:56 pm

    nonsense



  21. Cseven Street Reverend on May 22, 2019 at 7:57 pm

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



  22. Cody Miller on May 22, 2019 at 7:59 pm

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



  23. Lake Trash bag on May 22, 2019 at 7:59 pm

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



  24. Mac Diddles on May 22, 2019 at 8:00 pm

    It’s about how you metabolize the thc.



  25. LOtotheL on May 22, 2019 at 8:02 pm

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



  26. Ash Chand on May 22, 2019 at 8:03 pm

    LMAO the sock with all the blunts. OMG



  27. hothmandon on May 22, 2019 at 8:04 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.



  28. chevylover 15 on May 22, 2019 at 8:05 pm

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



  29. Thomas Livingstone on May 22, 2019 at 8:06 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 πŸ˜‰



  30. Wanirambo Rambo on May 22, 2019 at 8:07 pm

    i will never use theses drugs again



  31. John Carlo Abiog on May 22, 2019 at 8:09 pm

    I smoke weed on April 29 and i smoke again on May 11 and the date today was May 17 how long will it stay on my system because i have a drugtest on May 20 i need some advice guys?



  32. Elias Panousis on May 22, 2019 at 8:09 pm

    Her voice is so fucking annoying



  33. Dream Vibe on May 22, 2019 at 8:09 pm

    The music πŸ˜‚



  34. Fisher Man on May 22, 2019 at 8:09 pm

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



  35. Zig on May 22, 2019 at 8:11 pm

    91 days today since ive smoked marijuana, Tested myself this moring and failed.



  36. Juan Martinez on May 22, 2019 at 8:12 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?



  37. T 1C on May 22, 2019 at 8:13 pm

    This is bull πŸ’©. πŸ‘Ž



  38. Fransisco H on May 22, 2019 at 8:15 pm

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



  39. Sage Oldmann on May 22, 2019 at 8:17 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.



  40. Nichoals Nastari on May 22, 2019 at 8:18 pm

    Weed is healthy



  41. Don Lob on May 22, 2019 at 8:20 pm

    What if u smoke 3.5 a day



  42. Devastation on May 22, 2019 at 8:21 pm

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



  43. Kramped Tunic on May 22, 2019 at 8:21 pm

    Who else on colors 🀣



  44. Alien Genes on May 22, 2019 at 8:21 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 πŸ€ͺ



  45. Immortal on May 22, 2019 at 8:22 pm

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



  46. Richard McCombs on May 22, 2019 at 8:23 pm

    I watched this twice but saw no proof of the 30 day base period you speak of. I do understand that some people will react differently which is good to understand. I had heard it was 7 days in your system, another urban legend, that I never saw facts on but was around for years.



  47. Cody Lewter on May 22, 2019 at 8:25 pm

    Should I be clean if I only took like 3 or 4 hits it’s going on three weeks Saturday



  48. Timothy on May 22, 2019 at 8:27 pm

    Thc or thc metabolites?



  49. John Smith on May 22, 2019 at 8:27 pm

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



  50. vBounceout206 on May 22, 2019 at 8:28 pm

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