A drug test is the analysis of a biological specimen such as urine sample, hair, blood sample, sweat or saliva done in order to establish the presence or absence of a certain substance in your body. There are various drug testing facts which are not known to most people and they find themselves lost or out of place when they undergo a drug test. Drug testing facts such as the sample being used, the method of testing, the duration of the test, etc are useful and should be known to all individuals.

The samples being used for a drug test maybe taken from an individual blood, urine, sweat, saliva and hair as mentioned above. Testing of the hair is pretty expensive. It is not very invasive and may not show recent use of drugs. Drugs remain present in the hair for a longer time as the hair keeps growing. This is one of the most important drug testing facts to be considered while testing the hair sample of an individual. Blood tests are the most common form of drug tests. Testing the blood is very expensive but it is also the most accurate. Sweat and saliva analysis is also very accurate but not as popular. Urine testing is the most common method used to identify the presence of drugs in the body. Drug testing facts which are kept as priority when analyzing a sample to determine drug abuse can all be verified using a person’s urine as a sample. These drug testing facts include recent use of the drug and the specific nature of the drug being used.

While taking a urine sample, it is important for the person being tested to give the sample at the drug testing center itself. The individual is made to wear a hospital gown which keeps his/her back bear so as to avoid any risk of the person smuggling anything to tamper with the specimen. He or she maybe escorted to a dry room along with an escort to keep an eye on the individual. After collecting the sample, it is sent off to a drug testing lab where it is tested upon for various drugs or substances which maybe produced by the body in case of drug abuse.

One of the drug testing facts includes the presence of a cut off level. The drug test is said to give a negative result in case the presence of a substance is below the cut off level. Thus accuracy, time and sample are drug testing facts to be remembered while performing a drug test.