Hello doctor, how long does it take for thc to

Patient

Q: Hello doctor, how long does it take for thc to leave the blood?

Doctor

A:   Hello,
Welcome to ATD. Thank you for the query.

The duration of detection of THC varies with the method of detection and degree of the cannabis use.The drug will test positive in the urine for upto 46 days after heavy use.The figure for a single use detection would be 2 -5 days.The hair follicle testing would be positive for upto 90 days after cessation .The oral detection time in saliva is short for THC upto 6-7 hours whereas it is longer for other metabolites.Blood testing for THC would be positive upto 1 week in the blood. Sometimes, it can exceed upto 3 months, if you are a heavy habitual smoker.

Hope this helps.

Related Q&A

Q: My tongue normally rests at the bottom of my mouth, but a few days ago I noticed that all of a sudden I am constantly...

Q: I recently noticed the small thing under my tongue seems to be swollen or have a couple red bumps. There also appear...

Q: Hi A few weeks ago, i scratched the roof of my mouth multiple times. A couple days later in the general area, i notic...

Q: My 10 year old daughter has a little hard lump inside her cheek it moves around and causes no pain

Q: How do I get a circumcision when my GP says it's non threatening so I don't need one?

 
DOCTOR ADVISORY BOARD
218

Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician
173

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician
138

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist
98

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon
CNN
BBC
MSNBC
CBS
abcNews
FoxNews