Hair test can go back as far as 90 days and are one of the more accurate, less invasive methods of testing for drug use. They are not affected by abstinence from drugs. However, sometimes they can reveal when you used it and the amount they detect can often lead to postulations about how much was used. Unfortunately, it still can be detected. I highly recommend using vaultsoferowid.com for all of your "drug" questions....literally ALL of them.
The short answer is YES. This is because hair is not alive, it is a protein buildup which grows at the average rate of one half inch per month. Anything in you're body during the time of this growth will forever be detectable in that part of the hair.
ADDITIONAL INFORMATION:
Hair follicle tests are very inaccurate. They are susceptible to outside influence, such as if the individual is around people who smoke cigarettes, marijuana, or other vaporous drugs such as, crack, or speed, (Meth) though unlikely or rare test have even shown that passing individuals partaking such activities will result in a positive result for such substances. These types of test are meant to be sold to consumers I.e. Mom's and Dad's for profit not accuracy.
Mom, Dad, have a talk with you're kid if you're concerned and stick to blood and urine tests they are accurate... Well they are so long as you're kid hasn't been reading my other post in which the only accurate approach will be a blood test. Sorry to the kids of the un-trusting parents who make them face the needle. :(
If you take the test within 7-12 days of smoking, yes; otherwise no.
Depends on how long ago the test was. Typically a hair test will give a positive if you have used within the last 90 days.
Yes and hair follicle screen covers a period of approximately 90 days.
what if you smoke maruina amonth ago but not on daily basic would it show up on your hair drug test
Once it is in the hair, it is there until you cut it off.
Immediately.
Unlikly
No but it will still show up in your hair.
In all likelihood not, but I wouldn't gamble with it simply to get high once.
probably not drug detox varies from person to person, but if you have cut your hair once or twice since you smoked you should be fine you can buy products to cleanse yourself if your at all worried
If you did not smoke any marijuana, and you have since washed your hair, you will have no marijuana in or on any of the strains of hair on your head, and it will not show up on any drug tests.
Hair is dead tissue, and does not change appreciably after it grows out. Any drug metabolites in hair will be there until it is cut off.
No your test should be negative, as long as you haven't used any other drugs.
Absolutely! In fact it can be detected anywhere from 6 weeks to 3 Months after use. Just because you smoked it once doesnt mean you're off the hook.
3 days
No, you will not pass
It wouldn't show up if you smoked a carton an hour beforehand.
yes. only for about two months though.
no way!