Hair Test Questioin [Archive] - Green Grass Forums

bears34

02-22-2005, 03:35 AM

I'm hoping someone here, will be able to help me out with a question regarding hair testing. It will be done next week. Heres some info, tell me what ya think. Last smoked first weekend of december, just one nite. Haven't touched it since, prior to that it's been since Mid october. So, I'm a pretty light smoker these days.

Wondering on anybodys experience with hair testing, I know it's pretty much dead accurate. But my hair grows at a high speed, get it cut about every 3 weeks, hopin that helps me out. Has anyone ever tried tried the shampoos, Prolly wishfull thinking, but i'm hoping, wiht such light usage over the past few months and the shampoo, i might luck out and be able to land this job.

Your thoughts and opinions would be appreciated

Scarface2

02-22-2005, 04:32 AM

www.passmydrugtestnow.com (http://www.passmydrugtestnow.com)Hair Folicle Testing
The technology behind the hair test was pioneered by Psychemedics Corporation in 1987. Psychemedics Corporation is the world's leading laboratory for the testing of hair for the presence of drugs. Its client list includes over 2,200 corporations (over 10% of the Fortune 500), which use hair testing as part of their drug-free workplace programs. In addition, five of the country's largest police departments as well as schools and Federal Reserve Banks rely on Psychemedics' hair testing.
When drug metabolites are circulated in the blood, they enter the scalp's blood vessels and are filtered through the hair. These metabolites remain in the hair and provide a permanent record of drug use. With a one-inch hair sample containing about 50 strands, labs can detect the use of drugs within the past three months.

A standard screen covers a period of approximately 90 days. The hair sample is cut as close to the scalp as possible and the most recent 3.9 centimeters (approximately 1 1/2 inches) are tested. The hair sample is cut as close to the scalp as possible and the most recent 3.9 centimeters (approximately 1 1/2 inches) are tested. Assuming the sample is taken from the head, the amount of hair needed is a snip about the thickness of a shoelace tip.

Hair can be collected from several locations on the head and combined to obtain the required amount of hair. If necessary, body hair can be used as an alternative to head hair/ If you have very short hair, labs can take a sample from any part of the body.

Psychemedics Corporation (Amex: PMD) announced toda it has received 510(K) clearance from the Food and Drug Administration (FDA) for its test for the detection of marijuana use through human hair analysis. Psychemedics has now received FDA clearance for the five drug panel routinely used in drug testing.

Psychemedics' marijuana test system employs radioimmunoassay for the qualitative screening and mass spectrometry for quantification of carboxy -- THC in hair for the purpose of identifying marijuana use.

The hair is clipped and then dissolved in a series of solvents. Psychemedics' patented technology that detects drugs in hair using radioimmunoassay. RIAH® (Radioimmunoassay of Hair) measures the drug molecules permanently entrapped in hair which were incorporated following ingestion. The laboratory then analyzes the liquified sample using Gas Chromatography and Mass Spectometry. This makes it a highly sensitive test, yet the considerable cost and prolonged process means that it isn't often used. It also usually requires a confirmation test using urine.

People with dark hair are 10-50 times more likely to test positive for drug use. Hair testing is widely used in the casino industry. Companies such as Blockbuster Video and Subway perform hair follicle drug tests on all employees. Pschemedics markets their PDT-90 hair test collection kit to parents to be a deterrent to drug use and to tell whether a child has used drugs in the previous several months. The PDT-90 is available in some pharmacies and drugstores.