How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Family Physician Your Own Question
Family Physician
Family Physician, Board Certified MRO
Category: Drug Testing
Satisfied Customers: 12816
Experience:  Medical Review Officer - Physician Trained and certified in drug test interpretation
1304720
Type Your Drug Testing Question Here...
Family Physician is online now
A new question is answered every 9 seconds

If I smoke a joint, how long will it stay in my system for

Resolved Question:

If I smoke a joint, how long will it stay in my system for a urine test?
Submitted: 5 years ago.
Category: Drug Testing
Expert:  Family Physician replied 5 years ago.
I assume that you are asking in reference to drug testing.

A isolated (single) use of marijuana is detectable in saliva (oral fluid) for 12-24 hour and in urine for approximately 3 days.

HOWEVER, if you are a more frequent user; 3-4 times per week, the drug will be identified for 5-7 days, with daily use the drug can be detected 10-15 days after last use. With heavy daily use, the detection period can extend to 30 days or more.
Family Physician and other Drug Testing Specialists are ready to help you