Testing either the excreta like urine or stool of a person or his saliva or any such thing that could reveal his DNA for the presence of some specified drugs is called as drugs testing. We list follow few drug testing facts.

We first of all reveal the urine drug test. The person undergoing the urine test has to take out his urine and place it in a cup which would be covered with a proper seal and this would be further deported to a lab where it would be tested for the presence of the specified drug. The sample of the urine is divided into two parts. First of these parts is tested for the presence using a screening process and then in case the result comes out to be true, it is time to verify it.

Mass spectrometry is the method employed for it. In case any of the results does not turn out to be correct the reported reply would be the absence of the drug. In case the amount of the drugs are found in the sample and that too above a fixed level, then the authorities who sent the person for the tests are reported and are asked whether the person is having such a huge amount of drugs owing to any treatment. The chances of these urine tests to turn out to be true are high in the cases wherein the person has taken some sort of treatment before, after an accident or an injury.

The hair, when grow, have a kind of fatty acid which has its presence in the hair for a long time. These chemicals are produced in the hair only if your blood has some amount of alcohol contained in it. The amount of the alcohol taken is in direct proportion to the chemicals produced.

The place where this method gains an upper hand over the other ones is that this method is used in many cases where even more harmful elements are to be identified and are to be tested for. Even after the fact that your hair is most exposed to air, water, germs, etc this method gives best of the results. Thus these tests are used to check whether the person has it taken what amount of harmful toxins. The hair is sent to the labs after bleaching them. Ironically the hair does not change its property after being exposed to an external element.