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Blood tests for parasites

Parasites living in the human body causes vague etiology.It can be a rash on the skin, bloating, heartburn, nausea, weakness, anemia, joint pain.To clarify the diagnosis, special tests should be performed.

Parasites that can live in the human body

Hemetoscani from drops of blood for parasites

Parasite classification in its appearance:

  1. Lamblia,
  2. Opistarchi,
  3. Echinokocci,
  4. Togockers,
  5. Trichinella,
  6. Askarids.

For representatives of some occupations (for catering enterprise staff, children's institutions), the analysis of the worm eggs is needed in the design of sanitary books.Children bring the same analysis after admission to kindergartens and kindergarten or in the sports part.

  • A classic study on worms living in the gastrointestinal tract is an analysis of feces and scraping mucosa from the rectum.
  • But there are several options for more efficient blood tests for parasites, as intended for the method.

Classic Worm Research

Classic studies on worms living in gastrointestinal tract (gastrointestinal tract), for example, pinworms, ascarides, feces and scraping mucosal from the rectum.But one -The feces analysis may not show positive results, so it is recommended to do three times.

  1. A histological co-professional method of methods (inspection of material cuts below the microscope) is used for the analysis of feces and scrapes.The efficiency of the research is about 20%, because the probability is low that eggs or flattering will varnish in analyzed material.
  2. Controversial studies for Helminthe, simple parasites and fungus in the body are electro -acupuncture methods.Their essence is obtaining results using measurements of bioelectric reactions of active points of electrodes.Special devices are used for this purpose.Many doctors perceive research data skeptical.
  3. The latest parasite test is a blood test.

Types of blood tests for parasites

There are several options for blood tests for parasites: as intended for the method.Each of these methods has its advantages and disadvantages.Depending on the methodology used, there are the following types of blood tests:

  1. Elisa or immunofinted blood;
  2. PCR or polymerase chain reaction;
  3. Hemetoscaning;
  4. A serological blood test.

ELISA, Analysis of antibodies and immunoglobulin

This analysis is based on the immunological response of the body, the level of its protective reaction to the parasite invasion.When the antibodies form in the form of a human body in response to the entry of pathogens or simply external proteins in his blood, they are called immunoglobulins.

  • Using ELISA results, you can determine the presence of hermimans in the body and their kind.The accuracy of the study is much higher than the analysis of the feces.
  • The method is based on the calculation of antibodies in the body to one or other type of parasite, determining their connection with foreign antigens (immunological response) and the enzyme body reaction.
  • Antitles - antigens point to the presence of infection.
  • The blood test of the ELISA has precision, according to various experts, from 60% to 90% even at the low level of invasion.
  • The advantage of the method, next to the high level of accuracy, is that the immuno function can be monitored by the dynamics of the disease with time.

IFA blood tests for parasites

Analysis of antibodies appears as a set of characters that indicate these antibodies or are called immunoglobulins.

  • There are a total of 5 studio - IgG, Iga, IgM, Ige Igd.
  • In practical medicine, the first four immunoglobulins are important.

IgM is the main marker for acute stage of the disease

IgM - Immunoglobulin, which appears in the acute phase of the disease, means the beginning of the infection.

  • Appears in the blood of the fifth day,
  • It is revealed by analysis after 6 weeks.
  • Then he begins to disappear quickly.

IGE - marker, parasitic indication of infection

IGE - Immunoglobulin means the presence of parasites or allergies in the human body.

  • is the marker of the process associated with allergies,
  • Circulates a little in the blood, based on mucous membranes, macrophages and basophiles,
  • He participates in immunological responses to the infection of parasites.

Igg - Marker diseases and immunity

Igg - Immunoglobulin, appears in the disease process.

  • Igg also saved after healing, for some infections for living, for example, measles, rubella and others.
  • Discovering immunoglobulin in the blood says that the body has already met with this infection before, with this specific pathogen.

Result Analysis of the Elistrian Pars

For various combinations of pluses and minus in blood test for parasites, the following conclusions can be drawn:

  1. Lack of infection - all antibodies with minus;
  2. Acute stage-igg (+/-), IGA (+ \ -), IgM (+);
  3. Chronic form-IgG (+/-), IGA (-), IGM (-);
  4. Presence of immunity-Igg (+), IGA (-), IGM (-);
  5. Deterioration of chronic disease - IgG (+), IGA (+), IgM (+)
  6. If the disease is detected and treated, then the minus of all antibodies will be achieved only six months after treatment, sometimes after 1-2 years.

Reliability of Elis analysis

ELISA method gives 90% reliability levels for the diagnosis of akazare infection, pinworms (enteriobiosis), toksokari and others who cause Igg Igg Immunoglobulin in large quantities.

  1. You can specify a lamblioz separate and general (OPD) blood antibody levels.
  2. The OPD value is more than 1 suggest that there is an infection or was,
  3. With a value less than 0.85 there is no lambl.
  4. If the value is in the interval, it is desirable to repeat the analysis after 2 weeks.

This method is characterized by numerous weaknesses.The analysis allows you to determine the level of antibodies developed in the body for neutralizing Helmintha, not the worms themselves.

  • It is therefore possible to get false positive and false negative results.
  • This happens when patients take drugs,
  • Metabolic disorders and presence of parallel of current chronic diseases.

General blood test, changes in parasite infection

You can indirectly doubt the presence of invasion by making a general blood test.Since the presence of worms affects the internal bodies, producing their vital activities entering the bloodstream, changing its composition.Partial list of effects of the effect of the invasion of blood parameters:

  • increased hemoglobin;
  • Non-vermatic indicators of ESR;
  • excess of eosinophil by 20%;
  • Zhelezia Anemia.

If there are no other reasons for such deviations, it is recommended to include a special blood test for parasites, ELISA, PCR in the diagnostic program.

Polymerase chain reaction, PCR analysis

The PCR method or polymer reaction is considered fundamental in molecular diagnostics and is one of the most modern and most important to the diagnosis for the presence of parasite in the body.

  • It consists of discovering the traces of DNA and RNA, which belong to parasitic life forms.
  • The essence of the reaction of the polymerase is a blood treatment in such a way that it copies and propagate DNA, RNA foreign organisms on the concentration that enables them to determine.

Serological blood test

At the same time, the analysis is used as a source of information on blood serum.

  • The immunogenic antibodies of parasites are being investigated.
  • The analysis allows you to identify a large number of parasitic shapes, but does not allow you to specify the invasion phase.
  • Like the IFA method, serological analysis is indirect to diagnosis.
  • If the OPD values are large, it is advisable to pass the fecal analysis.

Diagnosis by blood scanning method

During the hemoscation on parasites, the drop "of the patient's blood is studied with optical devices in which, next to worms, you can determine their larvae and fungi.

How to take blood test for parasites

Blood fence with vein elbow

Donation of blood for parasites is done in a specialized laboratory.The blood for analysis is taken from the elbow of a vein in the amount of 3-5 ml and is placed in a dry sterile test.Before transferring analysis, it is recommended:

  1. Don't eat 8 hours;
  2. In the evening meals, leave fatty dishes and milk;
  3. Do not take alcohol and carbonated drinks;
  4. Avoid excessive physical effort, physiotherapy, radiation x -ray;
  5. refuse to take the medications.
  6. Akous drink is welcome.
  7. Conditions for blood donation PCR are less strict, because the degree of satiety does not affect the presence of DNA parasites.

Dates Analysis

  • The results of IFA and serological tests are issued within a week.
  • For PCR blood tests and hemoskaning, it is enough for a few hours.
  • In addition to the result analysis, you should definitely address the doctor.