what is the science of hair drug testing?
605369
I'm not a scientist, but from the research I've done online I found that since substances stay in your hair shaft for long periods of time, depending on the length of your hair.\nI've also read that they can find substances you might have been exposed to up to 10 years ago!\n\nI've noticed some companies list they do drug testing on hair, which is just rude, since what you did years ago has no bearing on what you do now.
1004956
The chemical in marijuana, THC, is absorbed by fatty tissues in various organs. Traces of THC can be detected by standard urine and blood tests for about 2 days up to 11 weeks depending on the persons metabolism, how much they smoked and how long they smoked. THC can be detected for the life of the hair. Again, the sensitivity of the test ranges from person from to person depending on many factors including the amount of body fat, differences in metabolism, and how long and how much they smoked.
597488
Call a store named "Curious Goods" in Lafayette, La. and order from them.  You can get urine cleaner and shampoo for your hair but be sure and have your own test done prior to the "important" test!  You can also get synthetic urine and heat packs to bring it up to the proper temp. They sell to many oil field/offshore workers who are tested regularly!  Oh yeah--just in case you are interested and can afford one-last time I was there they also had Tommy Chong Bongs for sale!
568165
Using coke or heroin or whatever isn't a wise thing to do anyway. Whether a test will find traces of drugs used after a certain time depends on the test itself. A normal blood test generally doesn't find much after 36-72 hours. Traces of marijuana can be found even weeks or months in urine-tests. Coke can be found several months after you used it in your hair! The best way to not get caught on using drugs:\nDon't use it! (It's better for both your physical and mental health anyway). Greetings from The Netherlands.
681477
I wouldn't count on it. It does remove mineral impurities from the hair, but you must use the shampoo AND the treatment.\nI'd be more concerned with the urine test showing a positive result for marijuana. There are not too many jobs which require a hair / follicle sample.\n\nTell her to flush her system by drinking lots and lots of water.\n\n***\nTell her to shampoo 2X with the aloe rid, towel dry,  and then to leave the treatment on her hair for 15 minutes or so and then condition. Do it everyday and it should help.
417624
Male pattern baldness, also known by its uglier and scarier clinical name androgenetic alopecia , is caused by some really funky chemistry on your scalp. It starts with testosterone, the male sex hormone. Harmless on its own, testosterone gets converted to the dicey dihydrotestosterone (DHT) when in contact with oil glands in the hair follicles. These glands hold the enzyme Type II 5-alpha reductase.  DHT, in turn, gets in your scalp follicles and shrinks them. At the same time, it makes the protective membrane of the scalp thicken, restricting blood flow to the capillaries. This makes further hair growth impossible. The hairs fall out at a natural rate, but aren't replaced. And that's it in a nutshell. \n\nPRODUCTS:\nFinasteride (Propecia)\nFinasteride, produced by Merck and Company under the name Propecia, was approved by the FDA in December 1997, as a treatment for male pattern baldness. It is the first drug available in pill form for the treatment of baldness.\nIn men with mild to moderate hair loss, clinical trials showed that 83 percent of the male patients had kept their hair or grown more after one year of treatment. Propecia (finasteride) works by blocking an enzyme called 5-alpha reductase, which is responsible for the formation of dihydro-testosterone in a man's body. The enzyme converts testosterone to DHT (dihydrotestosterone). It is believed that DHT is a key factor in male pattern hair loss, and finasteride decreases the concentration of DHT in a man's scalp by about two-thirds.\n\nminoxidil (Rogaine):\nMinoxidil, a drug produced by Upjohn under the name of Rogaine, has been available since 1988 for the treatment of hair loss. It is currently available as an over-the-counter drug. \nMinoxidil is topical solution that must be applied by applicator or fingers to the balding area twice a day, every day. Decreasing the dosage to once a day results in some hair loss, and discontinuing application causes regression to pretreatment baldness within 3 to 6 weeks. It can take 4 to 12 months to see results.\nAccording to the Food and Drug Administration (FDA), clinical studies show that 26 percent of men between 18 and 49 reported moderate to dense hair regrowth after four months of Rogaine treatment. An additional 33 percent had minimal hair regrowth. Almost 20 percent of women between 18 and 45 had moderate regrowth, while an additional 40 percent showed minimal regrowth.\n\n\nSurgical hair replacement:\nWhen experiencing thinning hair or baldness, men (and some women) consider hair transplantation, a permanent form of hair replacement. Anyone who has permanent hair loss may be a candidate for hair transplantation, including:\nmen with male pattern baldness \nsome women with thinning hair \npersons who have lost hair as a result of burns or other scarring injuries to the scalp, eyebrows, or eyelashes.\n\nTypes of hair replacement surgery:\nThere are a number of techniques used in hair replacement surgery. Sometimes two or more techniques are used to achieve the best results.\npunch grafts - usually contain about 10-15 hairs \nmini-grafts - contain about 2 to 4 hairs \nmicro-grafts - contain 1 to 2 hairs \nslit grafts - contain about 4 to10 hairs each \nstrip grafts - contain 30-40 hairs\n\n\nGood luck!
785869
No. That test is very expensive and does not come over the counter. They'd phase out urine tests for the most part if the hair test was cheap enough. Companies aren't looking to spend a few hundred dollars on each person though. Compare that to $50 (last I checked). Most companies also want to know about recent behaviour. Hair tests can go back up to around 10 years (again, last I checked). But drug tests, most of them, are not over the counter. You can buy some, yes. But they are really inaccurate and can provide false positives. The real ones are sent to a lab to be analyzed. The hair one is definitly prescription. It's like if you want to buy a scalpel. Believe it or not, that's something that you have to have a prescription for. My job is to make medical devices just like that. But only doctors can have prescriptions for medical devices.\n\nOr, are you talking about using hair as currency? Then the answer is no.
324560
the best way to get marijuana out of your system is to constantly drink water. Most drug tests test your urine for samples of it. Once it is all out, there is none to be found. Technically though, marijuana can be found in your hair follicles for up to years.
95039
some information on chemicals ingested can be gained from the hair tips. e.g. if somebody had died of arsenic poisoning they would analyse the hair to see if it was an accumulation or a single bolus dose.
285974
It can be detected in your hair follicles for six months after you quit. They use this for insurance fraud. If you say you quit, your doctor has to confirm it after six mo.
868512
Most likely it is a drug/alcohol screening. Hair is used alot more often for drug/alchol testing and is more accurate them unrine. Hair also can determine if your friend has been on drugs or drank and about how long ago. Urine can not determine how long ago the person did drugs or drank. Urine is also moderately flushable(Flushing the body out with water or natural herbs to try to cleanse it of the drugs/alcohol), and no amount of water or cleansing liquid from the natural food store can cleanse hair of alcohol use or drug use.
37139
yes. they can take hair off your arms too. Plus they will conclude that you bleached and cut your hair to circumvent drug testing.
165795
http://www.erowid.org/plants/cannabis/cannabis_testing.shtml
386058
You are out of luck.  The best way to pass a drug test is to just don't do drugs.  There are so many ways of drug testing today and some are foolproof.  For example, the only way to pass a hair strand drug test is to be drug free for 2 years!
647360
it depends on the type of test; if it is blood or urine, depending on your metabolism, between 2-5 days, faster if your metabolism is high (ie if you are thin it is probably faster, and if you are bigger vice versa) It also depends on your usage, if you are habitual, it could take somewhat longer than if you are an occasional or one time user....if is is a hair follicle test, it depends on your ethnicity, but it could go back up to 18 months depending on your hair color and length (shorter for blondes than brunettes) this info should be pretty on the mark... thc from marijuana stays in longer because unlike coke, it is stored in your fat cells
817906
It depends on the job - but being honest is usually best.  They'll likely nab you on the polygraph if you try to lie.\n\nEcstacy will leave traces in the proteins your hair and fingernails, but so will most other drugs.  If you've used recently the traces will be found in the portions of your hair closest to the follicle/root - if not then there should only be traces near the ends.
23297
to fully be non traceable in your urine, it is 6 months. it doesnt matter how much you smoke, it takes the same amount of time.  but it will always be in your hair.  if anyone does a hair analyst on your hair they can figure out how much of almost each drug you have taken, even legal drugs liks asprain.  luckly for some, alcohol can't be traced by your hair.