There are two main methods of diagnostics of blood on the content of narcotic substances. This is a quarterly test and chemical-Toxicological study. Quarterly test helps to establish the fact of consumption of such drugs as opiates, cannabinoids, amphetamines, barbiturates, cocaine, ephedrine.
As a result of complex processes of transformation of primary drug substance in the blood formed antigens. In response to the antigens antibodies. The purpose of the quarterly test is in detecting these antibodies.
Antibodies may persist in the blood for 3-4 months, because this is an extremely informative analysis. It will help to establish a long time facts use, and this strong side of the test. However, not assistant quarterly test in ascertaining the actual fact of narcotic intoxication, because antibodies are not produced so soon.
In addition, for production of antibodies of a single episode of drinking will not be enough. Must be a multiple of the sample. Because the most appropriate quarterly test will be for drug addicts, it also perfectly complements the results of other tests.
Another group of methods blood tests for drug chemistry and toxicology. They are similar to those in the urine. Such testing can establish the fact of drug use, if it has been more than 72 hours.
With the help of chemico-Toxicological methods, sometimes even can be set and the percentage of drug substance per unit volume of blood. It's not an instant test, it takes a long time for making results. The laboratory is also required to deliver special reagents.
In some cases, you can set the proportion of the drug per unit volume of blood. This drug testing is not a rapid method. Always need to send blood to the lab and use of special laboratory reagents and equipment.
Blood sampling for research can be done on the job under condition of delivery of special equipment. There is also the possibility to order the taking of blood for analysis at home. The injection site is disinfected after the procedure the patient is given a cotton pad to stop bleeding.
For chemical and Toxicological studies of the blood taken either by gravity in a dry bottle or the use of vacuum tubes. These tubes are special devices for rapid blood sampling. One end of a vacuum tube into a vein, others pierced the membrane of the tube.