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I know stuff can be detected a long time back, but since he last used 3 months ago, he has had his hair cut twice, and it's never longer than 1.5" maximum...and grows fast, so do you think he would have grown it out and the cuts would have helped?
can someone pretty please recomend a shampoo, I know most of them are rubbish, but surely there's bound to be some kind of method that works??
Although various products are available online that claim to remove all traces of drugs from ones hair for the purposes of testing, this really isn't possible to do. The trace metabolites of the drug molecules are literally ingrained into your hair strand at the time of growth. No shampoo is going to remove this. Bleaching hair does have a chance of destroying some of the drug traces that may be present, therefore chemically dyed or bleached hair may show up as holding less of the drug, compared to natural hair. It is possible that low or isolated use of drugs may not be detected, but frequent use will still show up, however the concentrations found may be less than those detected in untreated hair. The only other option is to shave all the hair off your head completely, but as stated below, there are ways around even this.
Here is an FAQ on hair drug testing, which may help to answer some of your questions:
What is hair drug testing?
A hair screening is an examination that uses a small sample of hair to identify specific drugs used by the person being tested. A hair follicle drug test measures the drug molecules and their specific metabolites that are produced only after the drug has been processed by the human body. After the drug is processed, trace amounts of its metabolites are inserted into hair follicle through the bloodstream.
What time period does a standard hair follicle test cover?
A standard hair follicle screen covers a period of approximately 90 days (three months), but is susceptible to time variation depending on the growth rate of your hair. The hair sample is cut as close to the scalp as possible and the most recent 3cm (or 1.25 inches) are tested. It is possible to go back even further than 90 days since the time period is limited only by the length of the hair sample, but is often standardised to a 90 day history.
What type of drugs can be detected in a standard hair test?
Hair collected at the crown of the head grows on the average of approximately 1.3 cm (or 1/2 inch) per month. This growth rate varies among people by approximately + .2 cm per month which can create a possible time variation of up to +1 week per month.
Will the use of chemicals on hair affect the results?
Chemical treatment of the hair such as hair dye, bleach, chemical straightening and permanent waves can damage the hair. This damage may lead to some of any drugs that may be present, being leached out from the hair, therefore treated hair may hold less drug than if the hair had not been treated. As a result, it is possible that low or single use of any drugs may not be detected. More frequent use of drugs can still be detected but the concentration found may be less than that detected in untreated hair.
Can body hair be drug tested like hair from the head?
Body hair can be drug tested in exactly the same way hair from the head is. The growth rates for body are considerably slower than the hair from your head. Most body hair is replaced in about one year. It is challenging to precisely represent the time period of a standard screen with body hair so substances may be detected in body hair for up to 1 year after the substance left the blood stream.
How much hair is needed?
A standard screen requires 40+ milligrams of hair or approximately 50 - 70 strands that are up to 3cm (or 1.25 inches) in length. The thickness and pigment color of different types of head hair (thick black vs. thinning gray) is the basis of this variation.
What if I am almost bald or have no hair?
Hair can be collected from several head and/or body locations (excluding pubic areas) and combined to obtain the required amount of hair. In the rare case where no hair is collectable, complete urine/saliva testing may be utilised.
How effective is hair follicle testing in detecting drug usage?
In comparison to a urinalysis drug test, cocaine, PCP, opiates, and methamphetamine have proven hair analysis far more effective than urine testing in identifying low-level drug use over an extended period of time since these are normally out of the bloodstream in within 3-7 days. The detection of cannabis is currently less sensitive than the other drugs in identifying low level drug users, but is considered approximately equal to urinalysis in identifying cannabis users. The detection period for hair is limited only by the length of the hair sample and is approximately 90 days for a standard screen.
Can passive smoking have an effect on results?
It is extremely unlikely that a positive drugs test could be the result of passive smoking. Smoke from drugs inhaled by a non-drug user can deposit small amounts of that drug in their system but this is far below the cut-off levels we apply to our results in order to protect the donor from such a possibility. The hair samples are also washed prior to extraction to eliminate any environmental contamination.
How can you detect the difference between over-the counter drugs and illegal substances?
As an example, whilst both are opiates, heroin would have a different molecular mass and a different chemical structure from codeine (which is available over the counter (OTC) in the UK)and so they would each travel through the analyser at different times. The analyst will identify the illegal drug from the OTC drug, by looking at the time drugs took to travel through the analyser and its chemical structure. Each drug has its own unique chemical structure which is then used to identify the drug.
How do drugs get into hair?
After a substance is ingested, whether orally, smoked, snorted, or injected, metabolites are produced as the drug is processed by the human body. As these drugs and metabolites circulate in the blood stream, they enter and nourish the hair follicle and are then inserted into the hair strand as it grows.
Last edited by Helene; 10-12-2009 at 02:25.