The 3 most common methods of testing are:
->Breath (used for Alcohol testing)
->Urine Drug
->Hair Drug Test
*Breathalyzer results are available immediately while urine and hair drug tests must be sent to the lab for analysis.
When a urine sample is sent to the lab, it is first screened using an immunoassay technique (EMIT). If a urine sample is determined to be positive at this step, it is than analyzed by Gas Chromatography/Mass Spectroscopy (GC/MS). GC/MS confirmation is used to double check positive EMIT findings and is the most accurate in use.

Some foods contain or produce chemicals in the body that may cause a positive drug test. Lab. personal "cutoff" levels, or allowable thresholds that recognize the possibility of food interaction. If a test falls below the threshold, the result is reported as negative.
Certain prescription medications may lead to initial false positive readings during EMIT screening. During the GC/MS confirmation process, it will be able to accurately determine if a medication has caused the initial positive reading. In addition, all positive results are reviewed by an on staff toxicologist and an independent Medical Review Officer (MRO). Both the toxicologist and the MRO are able the determine if a medication could have caused a positive reading.

Detection times vary form drug to drug and person to person. The following chart may be used as a rough guideline. This chart does not include the timeline for the hair dug test.
Alcohol- 24-30hr
Amphetamines -- 1-2Days
Canabinoids(THC)-- 1-36Days
Cocaine(metabolite)-- 3-5Days
Opiates -- 1-3Days
PCP -- 1-30Days

Any dismissal situation may be challenged on court. Substance abuse related dismissals are no exception. If a dismissal is challenged in court, the plaintiff rarely wins providing the laboratory and employer have acted within established, legal guidelines.

It is important that the results of drug tests are kept in strict confidence. Once the laboratory and the the conferring MRO have determined a positive finding, a pre-appointed contact person within your company will be notified of the result. That person will then follow your company's pre planned protocol for addressing such issues.

Laws on this subject vary form state to state. In most states, the employer must provide the employee with a name of an agency that provides help. In a few states, the employer must make a standing offer for future employment should the employee successfully complete rehabilitation. Some states dictate that the employer or a covering insurance plan pay for rehabilitation. It is best to check with legal counsel for the laws governing your state/states. In addition, agreements should be reached with unions if applicable.

1. Use search engines.
2. Read "Fooling the Bladder Cops: The Complete
Drug Testing Guide" by Justin Gombos

A: I doubt it. "On-site" specimen collections are reinforcing those odds against cheating. More and more companies are preferring to have a trained Drug Test Technician (DTT) visit their offices, warehouse, manufacturing plant, or other sites and have the actual drug test specimen collections performed there, where their employees are "on the job" . Unlike a busy clinic where specimen collections must take a back seat to the emergencies at hand, a DTT considers a properly-performed drug test collection their top priority. This includes taking the special precautions necessary to ensure that the donor (employee) is not attempting to "substitute" or adulterate" their specimen.
The second hurdle for would-be cheaters is the testing laboratories. Labs have greatly improved their methods in detecting those specimens that have been tampered with by the donor.

See an example: "How "ON-SITE" specimen collections are performed.


Adulterating urine samples, or altering a specimen by changing its concentration, is a common practice that drug abusers use to hide the presence of drugs in their system. Typical adulteration occurs by diluting the urine, either by adding water to their specimen or by drinking large amounts of water to over-hydrate themselves. By diluting the specimen, the concentration of drugs becomes less, sometimes falling below the established cut-off marks for detection. Adulteration tactics also include adding other substances to the urine sample (such as soap, bleach, vinegar, or apple juice), substituting urine from an animal or another person, and many other more elaborate schemes.

Previously, some abusers were able to pass a drug test by using one of these strategies. But new lab technologies are now detecting drugs in samples that were altered and un-testable before. Today, lab tests measuring specific gravity, pH, creatinine levels, and temperature are determining "positive" and "negative" results more accurately than ever.

Here are two of the more popular ways used to cheat a drug test and the usual result:

Attempt to cheat: A diluted sample, since it will have an abnormally low creatinine and specific gravity level
Result: The applicant must submit another sample, often directly observed by a same sex collector

Attempt to cheat: Samples substituted with urine from another source (e.g., a friend, spouse, commercially available urine, even an animal)
Result: The specimen will not usually pass temperature tests (checked by the collector); those that do pass within the accepted range usually will not pass the specific gravity tests (checked by the lab).

Lab tests today can often indicate that the sample is not from the donor. In at least one case a man substituted his sample with that of his wife. When the specimen failed the temperature test, lab testing indicated "he" was pregnant.

Adulterated samples will throw pH levels off or exhibit substances not normally found in urine. In cases where a definite positive or negative result cannot be determined, donors may be required to resubmit a sample under "observed" supervision. New lab testing methods now easily determine the presence of nitrites, such as the masking agent found in Klear®. Once nitrites are detected, further testing removes the masking effect to discover which drugs are present. Laboratories are constantly updating testing methods as new adulterant products enter the market.

While technology can now identify adulterated samples, safeguards also exist at the urine specimen collection site, whether it's at a clinic or at the job-site. For example:

donors are not allowed in the collection room with coats, purses, bags, or other objects that may be used to conceal an adulterant.

soaps, other possible adulterants are removed from bathroom; toilet water is tinted blue so it can't be used to dilute a sample.

donors must wash their hands before entering the collection room to reduce the risk of smuggling substances under their fingernails or on their hands.

in the case of "on-site" collections, donor is routinely required to report immediately and directly to the Drug Test Technician (DTT) when notified of drug test...donor is not permitted to "go the the locker room", "run down the hall", or "get something out of the car" (often-used ploys to enable a cheater to retrieve adulterants or substitutes) before seeing the DTT and providing a specimen.
CLICK HERE for more information about how "ON-SITE" collections work

As technology becomes more advanced and drug testing adapts to the creative methods of cheating, drug abusers will also have a harder time getting away with it.

COMMON WAYS TRIED BY DRUG-USERS TO BEAT A DRUG TEST

Using commercial "screens" (marketed everywhere, including all over the Internet) like Goldenseal, QuickKlean, or Mary Jane Super Clean 13. They do little more than dilute a sample. Any of them will "flag" the urine sample at the lab as "tampered-with". Under U.S. Department of Transportation regulations, D.O.T -covered employees whose sample is determined to be tampered with are automatically reported as "positive" on their drug test and they must be immediately removed from their positions by their employer.

Drinking vinegar. It will lower the pH of urine, giving the lab evidence of tampering. Drinking enough to sufficiently "mask" a sample causes violent diarrhea (just what the druggie deserves).

"Doping" samples with soap, salt, eye drops, or some other substance. These techniques also flag the sample as "tampered-with".

Total Myths About What Will Help Cheat a Drug Test

Eating red meat will raise creatinine levels in a diluted sample. (Wrong!)

Dog urine can be substituted to pass a drug test. (Wrong!)

Stealing your specimen from the lab will prevent them from processing the results. (The invalid theory being, labs never admit they lose specimens, so they would report your test as negative and you'd get hired anyway.) Wrong!

Increasing your metabolism will reduce the amount of time a drug can be detected in your system, and, eating a high calorie diet and starting an intense exercise program will do the same. (Wrong on both counts!)

You can buy it in local pharmacy store or over the Internet.
-------------

Buy Drug Test Kit from Amazon

-------------