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Detection of antibodies in the blood

Today, doctors who work in labs know how to correctly identify the causative agents of disease. This is done using the analysis of antibodies produced by the immune system of the human body.

Determination of antibody reaction to the kind of agent that is composed of blood, also called serological method. It is formed in the course of natural immune responses of the human body, which is capable of at a certain time to produce antibodies, such as IgG, IgM, IgA. This is a natural reaction to the presence of infection, and without the development of these antibodies is impossible to identify the infection and initiate appropriate treatment.

Detection of antibodies and their purpose

The basic material for the study of the immune system is human blood. Thus, all procedures can be circumstantial and indirect, but in any case, refer it to the blood.

Important! Procedures for the detection of antibodies directed to the DNA detection of the disease, not only the definition of its species or type.

Let's define some of the disease which detects the antibody:

  • Syphilis. The analysis on antibodies widely used in diagnostics of this disease, and always gives positive results.
  • Also, with the help of antibodies are investigated viruses and virus diseases.
  • Considering that every living being is unique, ranging from bacteria and protozoa and ending with man, each of them has its unique protein or marker, as it is called. Thus, the studies and analyses drawn up a perfect table of the antigens, which belong strictly to a particular type of infection.

    It turns out that once a disease enters the body, the immune system produces an antigen, by which we can determine what we're dealing with.

    If research is needed not the blood,the disadvantages of such studies include the fact that the blood contains so-called “traces” infectious antigens or similar pathogens. Antibodies or antigens in the body remain quite a long time after infection.

    As for infections such as AIDS or hepatitis, the antibodies can be preserved for a very long time. Such periods are referred to as seronegative, and they are often the reason for false positive tests.

    Another problem, which is often found in indirect methods is a certain amount of specific “traces” of the presence of bacteria. This is more for agents that are called "harmful". Pathogens can be slightly modified, but similar, like brothers and sisters. These are the bacteria that provoke the body's production of the same antibodies, and as a result, the analysis impossible to determine exactly what the doctornow faced.

    An example of such a situation could be the presence in the blood of antibodies to Chlamidia trachomatis, which in this case is absolutely not associated with vaginal khlamidioza. The antibodies in this case may be caused by the presence of other forms of chlamydia (chlamydia pneumonia) is the pulmonary form.