Saturday, February 21, 2015

General Information On Drug Testing Brisbane

By Olivia Cross


Varying situations may call for the testing for drugs in a person. A drug test is the analysis of biological samples to check for the absence or presence of metabolites or their parent drugs. This might be done using different specimens taken from a person, including: saliva, sweat, urine, breath, blood or hair samples. Drug testing Brisbane is available through many sources for those living in this area of Australia.

Testing could be done to check for steroid that enhance performance in athletes. Employers may also screen current or potential employees to see if there are illegal drugs present in their system, including cannabis, cocaine and heroin. Often police officers will test for alcohol presence, as well as the concentration of alcohol within a person. This is also known as BAC and most of these tests are issued through breathalyzer. Urinalysis is often reserved for sports or workplace testing.

A number of drugs are detectable through this process. There are detection windows that are based on numerous factors, including: drug class, frequency of usage, body mass, urine pH, metabolic rate, overall health, amount taken, and age. The period of detection for metabolites are generally longer than that of the drug itself. For instance, cocaine and heroin are only detectable through this for a few hours after the use, but metabolites can stay in the urine for days.

Oral fluid and saliva test results are similar to those done by blood, although there are some exceptions. Using breath air could also mimic the results of a blood test. In general, most hair tests have long detection windows, typically between 2 and 90 days.

Urine tests screen for parent drugs or their metabolites. These simply detect whether or not these things are present in the system, not how much or how long. This is commonly the approach used by employers who want to screen their employees. Generally, these people will be sent to a special collection site to have the test performed and will be given instructions on what to do. The sample given is watched over to ensure there is no tampering or invalidation that occurs by any parties involved.

Court systems often employ hair analysis. This is considered admissible evidence, legally and scientifically. Many drugs can be tested using samples of hair, such as cocaine, ephedrine, amphetamines and cannabis.

Presumptive substance testing is done by utilizing substances, materials or surfaces where trace amounts of illegal substances might be found. This may be used instead of testing biological matter of a person, such as urine or hair. This involves mixing the suspicious material with a chemical and if the response is a color change, a drug has been detected. Many of these are sold over-the-counter and can be done without professional labs.

This form of testing is ideal because a person does not need to know it is being done. Only a small piece of material is necessary to do this. Tests are for screening purposes and only provide results that are generic. Still, they can determine if at least a dozen drugs are present. It is important to utilize professional labs and workers in order to get top accuracy with results.




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