A Complete Guideline About Drug Testing
Examining a biological material such as urine, saliva, sweat or hair to identify the presence of a specific drug and detect any early drug use. Drug testing Nashville is widely used in numerous industries. Drug tests may be conducted to identify any illegal drug use or to perform drug screening to see if any particular drug has been used that would have been not allowed otherwise.
However, the most common type of drug testing is performed as urine drug testing. Let’s dive deeper into the topic to get further information.
Urine drug test screening
DNA testing Nashville as well as urine drug test screening can be done for many substances including methamphetamines, amphetamines, benzodiazepines, marijuana, cocaine, opiates, barbiturates, PCP, nicotine, methadone and sometimes alcohol.
Types of urinary drug tests
There are two common types of drug tests namely immunoassay and mass spectrometry or gas chromatography (MS or GC). Immunoassay gives quick results and is cheaper as well. However, it may, sometimes, be ineffective as it does not pick up on all substances and may give false positives. As a result, GS/MS is usually performed after that to attain perfectly accurate results. False negatives may take place with both types of tests. Moreover, there is a higher possibility that both the tests may not pick up on the day the drug is used. In case you get a positive result for an illicit that you have not used at all, a GC/MS test is performed after an immunoassay test.
Detection of drugs even after the effects have worn off
The best part about urine drug testing is that it is still able to record the presence of drugs in your system even after the effects of the drugs have worn off. Some substances are retained in the system longer than the others. There are certain factors influencing the identification of drugs such as its half-life, subject’s level of hydration, frequency of drug abuse, testing lab’s cut-off concentration and the route of administration.
One study suggests that mostly drugs stay in your system for up to four days. Chronic marijuana users, however, may test positive for four weeks or even more than that. One thing to remember is that drug tests for other biological materials detect drugs in the system for longer period of time.
What may lead to false positives?
Generally, there is no preparation prior to urine testing. Nonetheless, it is important to let your doctor know about any medications or supplements that you have taken before the urinary drug testing. Even herbal remedies could alter your urinary drug test results. In this case, it may cayuse false positives.
Therefore, before you schedule your drug test, make sure you do not take ant supplements or medication course that may affect your drug test results. We would recommend you to contact your doctor beforehand so he/she can guide you about any prior course you should be taking before the test is performed. With that being said, feel free to leave your experiences and reviews about drug testing!