Detailed Instructions: Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.
Problem:One of the most common drug tests is analyzed using urine. It is difficult to determine how long THC will be detectable in a users urine due to differing metabolism rates. On average, occasional marijuana users will test positive for 1-3 days after usage. On average, frequent marijuana users will test positive for up to 46 days after usage. Individuals who have been using marijuana regularly for many years can test positive up to 67 days after usage. How Long Does Marijuana Stay in Blood? Blood tests are another common drug test used to analyze drug usage. For single time users and occasional users, marijuana can be detected in a blood test 12-24 hours after usage. If hair on the head is not available, then body hair from other sites (such as the chest or underarm) may be used. As for how long marijuana or other drugs stay in hair, in theory, they may stay there for years, or even centuries after a person's death, according to a 2004 paper published in the journal Forensic Science International. Marijuana use can be detected through hair follicle testing for up to three months after use. Factors That Influence Drug Testing Different drug tests are more effective with particular drugs. How long does marijuana stay in a hair folicle test? How long does marijuana stay in your system once smoked? How do you determine how long weed will stay in your system when doing a drug test or a hair folicle test I am 5'4, weighing 335 lbs hoping that helps.. Help does marijuana stay in your hair follicles? Does marijuana stay in the root of the hair follicle for 6 months, or does it get pushed out by the new hair growing in? Urine testing is able to detect marijuana usage more effectively than a blood test beyond a week. If you suspect someone is abusing marijuana it may be best to use an alternative drug testing method, such as urine testing or hair follicle testing. How Long Does Marijuana Stay in Hair? Hair follicle testing is often considered one of the most accurate methods of drug testing. Of course, you could answer how long does weed stay in your system with the answer, not another second. All you have to do is shave off all of your hair. The Final Answer: How Long Does Weed Stay In Your System? The short-lived effects of weed don't prevent evidence of marijuana consumption from lingering in your system. But hair testing can't show very recent drug use (in the last few days), and so for detection of recent drug use, employers would use urine testing, Quest said. In 2015, about 7 percent of the U.S. workforce tested positive for marijuana using hair drug testing, according to Quest data. For marijuana testing, samples are analyzed for a breakdown product of tetrahydrocannabinol (THC), called THC carboxylic acid. It's very hard to fool a drug hair test, Quest said. In brief: Depends on use. It depends on how often you use it. If you used it only once it can be detected by blood for 12-24 hours while it is detected in urine from 1-7 days. With regular use it can be detected in blood for 2-7 days and in urine anywhere from 1-100 days even if a heavy user. Age, height, weight, metabolism all are considered factors. But how does marijuana get into hair, and how long does it stay there? The New York Police Department officer Sgt. Tracy Gittens tested positive for marijuana on a random drug test in January, and has been on paid desk leave since then, according to the New York Post. So again, how long does weed stay in your system? It depends what the system deals with, THC or its waste metabolite, THC-COOH. If the system deals with active, or delta-9 THC, weed doesn't stay around for very long. Query: how long do marijuana stay in hair?
Solution:
Marijuana stays for years in hair.