what can the hair test for cocaine show or are there any medications that would show a false positive?
89740
From what I understand it can show use as far back as SIX months. Not sure what would show a false positive (if anything).
474406
Blood tests or hair strand tests
699078
metabolites, or the original compound if its not broken down in the body...  the active chemicals in these drugs are usually broken down by the body and excreated thru urine..  some take longer for the body to break down.  and some are able to dissolve in you body fat (like the THC from pot)  and therefore get slowly released into your blood and then urine over time...  so that we can detect them for alot longer.   THC can be detected for up to 3 months(fat soluble), cocaine 4 days max, since the active dose for acid(LSD) is 100 millionths of a gram, the amount of metabolites is extremely small, so the test is extremely expensive, and RARELY used... if they actually test for it (never heard of it) it wouldnt be detectable for more than 3 days. \namphetamines(exstacy, methamphetamine, STP, )  for up to 5 days max..\n gas chromatography is the method of revealing compounds in the urine.  \n\nthey dont test for prozac or any other selective seratonin reuptake inhibitor(SSRI)..  unless they had a VERY specific reason to do so..  they can find out if your taking prescription drugs that are in the same class as they test for..  they typically test for amphetamine, cocaine, pot, opiates, pcp, and maybe benzodiazepines.  \n\nSOME scripts that will fall in these categories are:\n\namphetamines: adderall, dexedrine, ritalin\n\ncocaine: maaaybe if u ate a ton of novacaine lol\n\nopiates: oxycontin, darvocet, vicodin, codiene, morphine, percocet and most other pain killers that warn about drowsiness on the bottle lol\n\nbenzodiazepines: valium(diazepam), xanax(alprazolam), atavan (lorazopam), .. sonota, ambien, librium, klonapin(clonazepam), and a few more..   \nin this last class of compounds it totally depends on which one..   ranging from 3 days to 2 weeks...\n\nfor thing not listed here...  i suggest you go to wikidedia.com and look up the ones i mentioned, and compare how long i said they would be detectable with the drugs "half-life" (listed in the right column for drugs on wikipedia) .. and compare the two numbers for each to get a feel for it.. and then look up what your wondering..  \n\nhalf life means the time it takes half of it to leave your system.
182064
First problem is that there is no sure way to pass a drug unless of course your clean. Many websites offer things to supposedly "cleanse" your system but nothing works except for time. But, one thing that can actually speed up the rate at which your body is cleansed is hair and nail growth pills. They helped me out, but of course, if shes getting a hair drug test then this is no good because it actually deposits the drugs into new hair and nails. Enjoi
347880
drugs in general will pass through your system within a few months and not show up in a urinalisis, but they can still be detected though blood and hair folicles.
625607
it shouldn't.  amphetamines are cleared relatively quickly from the system and are really only present in your urine for a day or two.  \n\nhowever, there are newer tests of your hair that can detect ecstasy for longer
379886
Continue to deny any use of drugs, ask for another test, they have to administer it. There are a lot of false positive results with most of the urine tests employers use as a screening tool, because they are using the cheapest tests they can find (in most circumstances). Some medications you take can result in a false positive, be sure to let someone know exactly what medications you are taking.
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.
924908
Probably Not. The usual panel tests for:\nAmpethamine\nCocaine\nMethamphetamine\nMarijuana\nOpiates
216140
Drug tests are not 100% accurate.10% of all drug tests will show positive, regardless if you are or not.  They are made by people, people make mistakes.
1135032
Standardly Detectable in Urine for 48-72 hours after use.\n\n"Elimination of cocaine is predominantly controlled by its biotranformation. Very low concentrations of cocaine may be detected in urine during the initial several hours, but benzoylegonine persists in urine at detectable concentrations for 48 hrs."\n\nLong term habitual users may have traces of cocaine remain in their system for longer than the standard 3 days.\n\nIn hair tests, it can be detected at different variables, depending on your metabolism.  Increasing doses usually result in increased levels of the drug and metabolites in hair.
638714
It depends on the test.  Usually, it's up to 2-3 days, but  urine samples can be positive for cocaine metabolites for a week or longer in adults (and even longer in children--God forbid!!).
763173
I think you mean a positive for amphetamines in general.  Methylamphetamine is in a smaller subcategory then amphetamines alone.  But to test positive in these areas, you would have to ingest some form of speed.  Such as any isomer of amphetamine,  methylphenidate,  methcathinone, MDMA, MDA.  There has been some occasions where a high dosage of pseudoephedrine could potentially show a false positive of amphetamines.  But in response, none of the medication you listed has potential for showing a positive in amphetamines.
702982
false positive result
456925
You name it, there is a test for it. They do blood tests, urine tests, they even have a hair follicle test. with that test, they can find out, when you did it, how you did it.
1013088
They send you to a lab to do the test.  It test for everything from cocaine, to pot, to prescription drugs such as vicodin.  Basically ANY kind of drug that is in your system will be found during this drug test...so even if you're taking a prescription drug, be prepared to explain why it's in your system.  I know this because when I tried to get on at Albertsons, when I took my drug test I had vicoding in my system..from a prescription...but since I couldn't find my prescription bottle they refused to hire me.  So..just be prepared..EVERYTHING that is considered a drug whether legal, illegal, prescription or over the counter will show up when they do the test
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.