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Blood tests for parasites

The parasites that live in the human body cause badly -to be clear from the so clear etiology.It can be rashes, flatulence, heartburn, nausea, weakness, anemia, joint pain.To clarify the diagnosis, special tests must be done.

Parasites that can live in the human body

Hemoscania of blood drops for parasites

Parasitic classification in its appearance:

  1. Lamblia,
  2. OPISTORCHI,
  3. Equinechococci,
  4. Toxockers,
  5. Trichinella,
  6. Askarids.

For representatives of some professions (for catering companies, children's institutions), worm egg analysis is required in health book design.Children pass the same analysis after admission to childhood gardens and a nursery or a sports section.

  • A classic study on worms that live in the gastrointestinal tract is an analysis of stools and a scraping of the rectum mucosa.
  • But there are several options for more effective blood tests for parasites, as intended and according to the method.

Classic research on worms

A classic study of worms that live in the gastrointestinal tract (gastrointestinal tract), for example, worms, ascarids, is an analysis of feces and a scraping of the rectum mucosa.But one hour analysis of stool may not show positive results, so it is advisable to do three times.

  1. To analyze stools and scraping, the histological method of co -program is used (visualizing the cuts of the material under the microscope).The efficiency of the research is about 20%, because the probability is low that eggs or parasites will fall into the analyzed material.
  2. Controversial studies for helminths, simple parasites and fungi in the body are electro -acupouvos methods.Its essence is to obtain results using bioelectric reactions measurements of active electrodes active points.For this purpose, special devices are used.Many doctors perceive skeptical research data.
  3. The most informative examination of parasites is a blood test.

Types of blood tests for parasites

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

  1. Elisa or immunophical blood of the blood;
  2. PCR chain reaction or polymerase;
  3. Hemoscan;
  4. Serological blood test.

Elisa, antibody analysis and immunoglobulin

This analysis is based on the body's immune response, the level of its protective reaction to the invasion of parasites.When antibodies form in the human body forms in response to the entrance of a pathogen or simply a strange protein into their blood, they are called immunoglobulins.

  • Using Elisa's results, you can determine the presence of helminths in the body and your type.The accuracy of the study is much larger than the analysis of stool.
  • The method is based on the calculation of antibodies in the body in one type of parasite, determining its connection with foreign antigens (immune response) and the enzymatic reaction of the body.
  • Antibodies - Antigens indicate the presence of infection.
  • Elisa's blood test is accurate, according to different experts, from 60% to 90%, even at the low invasion level.
  • The advantage of the method, besides a high level of precision, is that an immunal function analysis can be monitored by the dynamics of the disease over time.

IFA blood tests for parasites

An antibody analysis looks like a set of characters that denotes these antibodies or are called immunoglobulins.

  • In total, 5 of them were studied - IgG, IGA, IgM, IGE Igd.
  • In practical medicine, the first four immunoglobulin are important.

IGM is the main marker for the acute phase of the disease

IGM - Immunoglobulin, which appears in the acute phase of the disease, indicates the onset of infection.

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

IGE - marker, parasite infection indicator

IgE - Immunoglobulin indicates the presence of parasites or allergies in the human body.

  • is a marker of processes associated with allergies,
  • It circulates little in the blood, based on mucous membranes, macrophages and basophils,
  • Participates in immune responses to parasites infection.

IgG - marker of the disease and immunity

IgG - Immunoglobulin, appears in the disease process.

  • IgG also preserved after a cure for some infections for life, for example, measles, rubella and others.
  • The detection of immunoglobulins in the blood says that the body had already found this infection before, with this specific pathogen.

The result of the ELISTICAL PARSS Analysis

For different combinations of advantages and less on parasitic blood test, the following conclusions can be taken:

  1. Lack of infection - all antibodies with one less;
  2. Aguisoigg stage (+/-), Iga (+\-), IgM (+);
  3. Chronic Form-Igg (+/-), IGA (-), IgM (-);
  4. The presence of IMUGG (+), IGA (-), IgM (-);
  5. Exacerbation of a chronic disease - IgG (+), IGA (+), IgM (+)
  6. If the disease is detected and treated, the negative values of all antibodies will be reached only six months after the course of treatment, sometimes after 1-2 years.

The reliability of Elisa's analysis

The Elisa method provides the level of reliability of 90% for the diagnosis of ascarid infection, worms (enteriobiosis), toxocars and others that cause the formation of IgG immunoglobulin in large quantities.

  1. You can determine lambliosis by separate and overall value (OPD) of the blood levels in the blood.
  2. The value of the OPD is more than 1 suggests that there is an infection or was,
  3. With a value of less than 0.85, there is no Lamblia.
  4. If the value is in the range, it is advisable to repeat the analysis after 2 weeks.

This method is characterized by various weaknesses.The analysis allows to determine the level of antibodies developed in the body for the neutralization of helminths, not the worms themselves.

  • Therefore, it is possible to obtain false positive and false negative results.
  • This also happens when patients who take drugs,
  • Metabolic disorders and the presence of parallel of current chronic diseases.

General Blood Examination, Changes in Parasites Infection

You can indirectly suspect the presence of invasion by taking a general blood test.As the presence of worms affects the internal organs, the products of their vital activity enter the bloodstream, changing their composition.Partial list of the results of the effect of the invasion on blood parameters:

  • Increased hemoglobin;
  • Non -normative VHS indicators;
  • excess eosinophils by 20%;
  • Anemia of Zhelezia.

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

Polymerase chain reaction, PCR analysis

The PCR method, or polymer chain reaction, is considered fundamental in molecular diagnosis and is one of the most modern and accurate for the diagnosis for the presence of parasites in the body.

  • It consists of detecting traces of DNA and RNA, belonging to parasitic life forms.
  • The essence of the polymerase reaction is blood treatment in order to copy and propagate DNA, the RNA of foreign organisms for a concentration that allows them to determine.

Serological blood test

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

  • Immunogenic antibodies of parasites are investigated.
  • The analysis allows you to identify a large number of parasitic forms, but does not allow to determine the invasion stage.
  • As the IFA method, serological analysis is indirect for diagnosis.
  • If OPD values are high, it is advisable to pass additionally in fecal analysis.

Diagnosis by blood scanning method

During parasitic hemosphering, a "alive" drop of blood is studied by optical devices in which, in addition to worms, you can determine your larvae and fungi.

How to have a blood test for parasites

About the blood from the elbow vein

Blood donation to parasites is performed at a specialized laboratory.Blood for analysis is removed from the elbow vein in the amount of 3-5 ml and is placed in a dry sterile test tube.Before passing the analysis, it is recommended:

  1. Do not eat for 8 hours;
  2. At the night's meal, abandon fatty dishes and milk;
  3. Do not take alcohol and carbonated drinks;
  4. Avoid excessive physical efforts, physiotherapy, radiation x -rain;
  5. Refuses to take medications.
  6. The abundant drink is well -being.
  7. The conditions for blood donation to PCR are less rigorous, because the degree of satiety does not affect the presence of parasite DNA.

Analysis dates

  • IFA and serological test results are issued within a week.
  • For PCR and hemoscan blood tests, a few hours are enough.
  • With the result of the analysis, you should definitely consult a doctor.