There are many different tests for marijuana. Some of these tests can be conducted at home. Other tests need to have samples sent to a laboratory for analysis. There are some tests that require the person to be at a hospital or clinic in order for the test to be performed. These tests for marijuana are becoming more common and necessary due to the increased number of children and adults who are using marijuana illegally. While it is common to test for marijuana for a job and government compensation, tests for marijuana are now becoming commonplace in schools and during police stops. All of this is done for the sake of the public safety, although many consider the measures too far and too invasive.
The single most common test for marijuana is a urine test. This test is effective for up to two months after the use of marijuana provided the individual being tested has not used a marijuana detoxification product. This sample involves the individual being tested urinating into a specialized and sterile cup. The bottom or low side of the cup will have a test strip attached to it. This test strip will change colors in a variety of spots along the strip in according to what drugs the test taker has in his system. This is one of the most effective methods for testing if a person has used marijuana. There is a variety of ways that people work to get around the test, though, and the tester should watch to ensure that the urine that is being tested is really coming from the person being tested. Click here to read more info about test for marijuana.
Another common test for marijuana is the cotton swab test. This test is done by wiping the inside of the mouth with a cotton swab and then placing that in a test tube with a specialized chemical in it. This chemical only tests for one drug, in this case, marijuana. The test is generally effective for a few dance since the marijuana use, although in some cases it can be longer or shorter depending upon how the cares for his or her mouth. This test can be more difficult, but not impossible to work around for the individual who is being tested. If the person being tested is not being watched, he or she may be tempted to wet simply the swab or not wipe it on the inside of their cheek. This can result in a false negative. It is important to watch the person perform the test and that the test is done with an open mouth to ensure the right area is being used to obtain the sample.