The analysis of the blood of a parasitic infection: what you need to know?

Laboratory examination of blood, the most reliable of all the methods of diagnosis of various diseases, including infection with parasites. These organisms, by a parasitic way of life poison in the human body, its products, their livelihoods, and also affect the immune system in the effort of the threat to their own comfortable existence.

In the present time, there is enough effective laboratory tests of the blood on the identification of parasitic infections.

Blood test

In which cases you need a blood test for the detection of the parasite

More than 70% of patients are not aware of the presence of vermin, and, therefore, not properly keep can laboratory diagnosis on their presence in the body. Everything changes then, to feel if the person starts feeling unwell unclear character. A visit to the doctor and tried all the methods of diagnosis, to clarify the picture, in the end, the laboratory tests of the blood on the identification of parasitic infections.

And in the meantime there is enough of the typical symptoms that speak volumes about the presence of the parasites in the human body:

  • characteristic symptoms on the part of the gastrointestinal tract: heartburn, nausea, constipation and diarrhea, flatulence, vomiting;
  • Anemia that is not treatable;
  • regularly a violation of the stool: diarrhea constipation soaked;
  • aching pain in the joints;
  • allergic reactions, unclear etiology;
  • Rashes on the skin in the Form of blackheads, pimples, comedones;
  • frequent colds due to the weakening of the immunity;
  • Exacerbation of chronic diseases due to weak immunity;
  • To eat loss of appetite, or conversely, uncontrollable desire to often and a lot;
  • a feeling of fatigue, weakness and drowsiness.

However, the diagnosis of parasitic infections is only on the above-mentioned symptoms is very difficult, because they are typical for other diseases. Especially symptoms of the gastro – intestinal tract confuse as a doctor and a Patient can. Therefore, blood enzyme-linked Immunosorbent Assay for the identification of parasites, the one of the most reliable methods of laboratory studies need. In addition, there are other blood tests that you can rent for the diagnosis of infection.

Risk group: who needs the Tests for parasites

There is a certain risk group of people, the tested blood donations for parasites and their presence in the body is not less than 1 time in a year. The following groups of people include:

  • People who work professionally with animals (dog handlers, veterinarians, animal trainers);
  • Families in which to live Pets;
  • medical professionals who constantly work with infected people;
  • the educators of the kindergartens and teachers in schools, as they work with children, must be healthy, but they themselves can be a source of infections;
  • Staff catering (cafes and Restaurants), because they have contact with food.
Laboratory

Methods blood tests for the detection of the parasite

Until recently, the most common analysis for the detection of the parasite in a stool sample was. He showed the presence of worm eggs in the feces. But this study was not always a positive result, because the worm eggs can not be overlooked or missed. For this reason, it was necessary, the analysis Kala make 8-10 times. Nowadays, a number of laboratory tests for the presence of parasites can in every immunological laboratory.

For the correct diagnosis of parasitic infections in the present time, the following analyses use are based on different principles:

  • Hemo-Test, scan the "Live" drop of blood;
  • the analysis of the PCR (Polymerase chain reaction);
  • the analysis of the Elisa-Test (immunoassay testing of blood);
  • serological blood test, based on the study of blood serum.

These are just the basic methods of research, but far from all. You can't coil unlike the outdated methods of diagnosis, the availability in the body also immature people endless, the lay their eggs.

The modern methods of research appeared not so long ago, and its essence is based on the analysis of the DNA of the parasites or immunoassay analysis of substances that produce the parasites.

Sometimes it is impossible to determine the presence of parasites in the body is only a method. Therefore, use several methods to determine the various forms of parasitic infestation. In addition, each method for the investigation of the blood has its advantages and disadvantages.

Hemo-scan, blood (hemo-Test)

In the implementation of hemo-Test, a drop is taken blood from the Finger examined, and with the help of dark-a microscope that magnifies the image in 1600 times. The results are immediately displayed on the Monitor of the computer. This method makes it possible to effectively determine not only the presence of adult parasites but also their eggs and larvae. For example, you can observe how the larvae of the parasites cling to erythrocytes, and when he dies, find a new. This is a very dangerous kind of parasites, the intracellular be-named. Also Hemo-Scans, you can detect fungal infections and to see changes in the behavior of the cells in the earliest stages of the disease.

In General, Hemo-Test in combination with other methods of diagnosis, since it does not detect the number of parasites in the body.

Haemo scan of a blood

Method PCR, or Polymerase chain reaction

This method uses principles of molecular biology. It is based on the use of special enzymes, the multiple copies of fragments of RNA and DNA of the parasites in the investigated blood or Plasma. The Polymerase chain reaction is carried out in a special device – in amplifier, the in the location, low and high temperatures act on Biomaterial (blood or Plasma). Variations of the temperature indicators is a prerequisite for the process of copying the DNA and RNA of parasites and affects the accuracy of the final result. This method is able to identify and within the intracellular tissue parasites, mainly protozoa. The disadvantage of the PCR method is the inability to inform on the stage of the disease and the number of parasites.

Immunoassay Blood Test (Elisa-Based Diagnostics)

IFA diagnosis is a laboratory investigation, the essence of which is based on the immunological method for the determination of specific antibodies against certain antigens. The anti-body is of great importance immunoglobulins, in the Form of immune complexes and are indicators for the development of various diseases, as well as their activity stream.are

In any foreign agents in our body, the specific antibodies it produces. They are created through the "Tandem binding" Antigen and foreign Agent, forming a complex "Antigen-antibody".

For the detection of the parasite using this method, produce blood sampling from the vein, the research on the determination of specific antibodies. To identify the Elisa method for the diagnosis, to identify with high accuracy the presence, not only the nature of the parasite, but also in what stage of development you are in, and their number in the body. Immunoassay research also allows for the diagnosis of infection in the early phase of the development, if it's even noticeable. The disadvantage of this method is the possibility of false positive or false negative results.

Capsule

Serological Blood Tests

Investigation of blood serum of laboratory method for the investigation of the constituents of the blood, which is kept, such as for the detection of the parasite and for the identification of infections, germs and viruses in the human body.

The essence of the method consists in the study of blood serum for the detection of specific proteins, to produce the parasites, viruses and microbes. This method is also applicable for the determination of the blood groups of the people. Blood sampling in the morning, on an empty stomach.

This study is very effective in the detection of all types of worms and parasites, including protozoa. The disadvantage of this method is in the inability of the blood to determine the stage of development of the parasite, as well as their quantity in the body.

But, unfortunately, none of the above methods will not be able to specify the localization of the parasites in the human organism. But, nevertheless, know the location of the parasites on the basis of the types of parasitic infection and the symptoms observed.

Other methods of diagnosis of parasitic diseases

There are also other methods of diagnosis of parasites, who in a private case.

  1. Histological coprogram. This method of diagnosis includes physical, chemical, and microscopic examination of feces. With this method, you can reveal to show a parasitic infection, infestation, a kind of parasite, and find also their eggs and larvae.
  2. The blood picture is not always an effective way for the identification of parasites, but in some cases in the blood, you can see, the impact of the activity of the parasites, but also to know whether there is an anemia in humans.

In any case, not only a research method, but a private program that includes a series of measures for the diagnosis of parasites in the body. Sometimes you can do a single study, and in other situations, an individual comprehensive study. What Tests to perform, detects only the treating doctor. But in any case, the blood for the determination of parasitic infestation the most effective methods of diagnostics samples.

How to prepare the examination of the blood for the identification of parasites

The blood tests showed that to obtain a reliable result, should be carefully prepared in advance. First and foremost, the intake of medicines should impact on the formula of the blood in varying degrees. These conditions are necessary for diagnostics, immunoassay, blood, serological analysis and diagnostic scan. A week prior to the date of transfer of the sample collection, the intake of pharmacological agents should.

In addition, before the examination of the blood for the presence of parasites, you must feed on the correct diet rich in fresh fruit and vegetables, excluding alcoholic beverages, fat-and calorie-rich. Such a diet should be three days prior to the scheduled laboratory tests. Directly prior to analysis, it is generally not recommended. If you blood tests for the detection of the parasites on an empty stomach, then Giardia, pinworms and ascarids found in the blood with a higher certainty.

To decipher how the results of the analyses

Diagnosis of parasites

In General, the Interpretation of the analyses, the technical group, carried out directly in the laboratory is concerned, because sometimes in the analysis, certain errors occur. But each of the people is it useful to know what the symbols mean in his laboratory analysis. So:

  • the sign "+" in the case of IgG and IgA suggests that the infection subsides, and in the blood only in post-immunity is located;
  • if the "+" sign at the IgM, then exacerbation of chronic infection;
  • if the "+" sign stands in the case of IgM, IgG and IgA , means, the infection is in the acute stage of the development;
  • The combination of IgM ( - ) IgG (+/-), IgA (+/-) speaks of a chronic infection in the stage of attenuation;
  • IgM (-) speaks of a complete Remission.

More accurate decoding of the received results of the analysis makes the expert. In the case of an integrated approach, lead to a series of laboratory-study all the stages of the disease can determine, from the acute Form until complete Remission. On the basis of the diagnosis should not self-medicate and independently taking medication, since, according to an analysis of further studies, in which the image of the disease in the full.must

02.06.2019