The most common drug test is actually the urine test
. This testing is generally inexpensive and fast way of checking for drug use. The advantages of the urine drug tests are that they are safe and minimally invasive. Test results are returned quite quickly within 24 to 48 hours.
As there are dozens of labs in each city, the main factor in selecting urine test is convenience. Drug testing centers are generally located nearby the company. The employee should sign in, then sign several releases and urinate in a special cup. The employee can close the door in a restroom partially for privacy. Many urine drug tests are able to detect certain masking agents; thats why the necessity to urinate in company has been eliminated. The process lasts about 20 minutes. Employers get the results within a few hours.
Though urine tests are the most widely spread way of pre-employment screenings, many scientists have created methods to beat urine drug tests. A variety of products can be bought online. There were cases when people purchased urine from their "clean" colleagues and used it for drug testing. Mostly the clean urine sample is kept in a plastic bag, strapped to the body and then passed as a sample for urine tests.
Testing labs checking for different masking agents developed synthetic urine. It generally comes in powder though it may also be liquid. This powder is to be mixed with certain water amount and comes in a special container which also contains a thermometer. The temperature stays fresh for several hours. Synthetic urine has all the properties necessary for a lab testing. Some chemicals and body temperatures usually present in urine are detected in the synthetic urine.
In spite of the fact that urine tests are very accessible, cheap and minimally invasive, lots of employers realize that its the simplest to evade. As there is a great number of ways to cheat on urine drug testing, many people use saliva, hair follicle or sweat drug tests instead. These tests might not be as inexpensive and convenient as urine drug tests; however they are more reliable.