Toxic OFF Official site
Share this

Blood tests for parasites

Parasites that live in the human body cause unclear etiology.It can be rashes, flatulence, heartburn, nausea, weakness, anemia, joint pain.Special tests should be carried out to clarify the diagnosis.

Parasites that can live in the human body

Hemuskania of blood waste for parasites

Classification of parasites in their appearance:

  1. Lamblia,
  2. Opistorchi,
  3. Echinococci,
  4. Toxocker,
  5. Trichinella,
  6. Askarids.

An analysis for eggs of worms is required for the design of sanitary books for representatives of some professions (for employees of catering enterprises, children's institutions).Children have the same analysis when they are admitted to kindergartens and a kindergarten or in a sports section.

  • A classic study of worms that live in the stomach intestine tract is an analysis of feces and a scratch of the mucous membrane from the rectum.
  • However, there are several options for more effective blood tests for parasites, such as intended and according to the method.

Classic research on worms

A classic study of worms that live in the stomach intestine tract (stomach -intestine tract), e.g.However, a one -Time analysis by Kot may not show any positive results, so it is advisable to do three times.

  1. The histological co -program procedure is used to analyze feces and scratches (displaying the cuts of the material under the microscope).The research efficiency is about 20%, since the probability is low that eggs or parasite larvae fall into the analyzed material.
  2. In order to have controversial examinations for helminths, simple parasites and mushrooms in the body are electrical charging methods.Its nature is to obtain results using measurements of bioelectric reactions from active points with electrodes.Special devices are used for this purpose.Many doctors perceive the research data skeptically.
  3. The most informative examination of parasites is a blood test.

Types of blood tests for parasites

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

  1. Elisa or immunophynticnae of blood;
  2. PCR or polymerase chain reaction;
  3. Hemoscaning;
  4. Serological blood test.

Elisa, analysis for antibodies and immunoglobulina

This analysis is based on the body's immune response, the degree of his protection reaction to the invasion of parasites.If antibodies in the human body shape form in response to the penetration of a pathogen or simply a foreign protein in his blood, they are called immunoglobulins.

  • With the results of Elisa you can determine the presence of helminthen in the body and your species.The accuracy of the study is much higher than the analysis of Kot.
  • The method is based on the calculation of antibodies in the body against one or the other type of parasite, determining its connection with foreign antigens (immune response) and the body reaction of the body.
  • Antibodies - antigens indicate the presence of an infection.
  • According to various experts, a blood test from Elisa has 60% to 90%, even at a low level of invasion.
  • The advantage of the method in addition to a high level of accuracy is that an immune function analysis can be monitored over time due to the dynamics of the disease.

IFA blood examinations for parasites

An analysis for antibodies looks like a series of characters that denote these antibodies or they are called immunoglobulins.

  • A total of 5 of them were examined - IGG, IGA, IGM, IGE IGD.
  • The first four immunoglobulin are important in practical medicine.

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

IGM - immunoglobulin that occurs in the acute phase of the disease shows the beginning of the infection.

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

IGE - marker, parasit infection indicator

IGE - Immunmunoglobulin shows the presence of parasites or allergies in the human body.

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

Igg - marker of disease and immunity

IgG - immunoglobulin appears in the process of the disease.

  • IGG was also preserved for a healing for some infections for life, for example measles, rubella and others.
  • The detection of immunoglobulins in the blood states that the body had previously made this infection with this specific pathogen.

The result of the analysis of Elistral Parss

For different combinations of plus points and minus in the blood test for parasites, the following conclusions can be drawn:

  1. Lack of infections - all antibodies with a minus;
  2. Acute step (+/-), iga (+\-), igm (+);
  3. Chronic form-igg (+/-), iga (-), igm (-);
  4. The presence of immunity (+), iga (-), igm (-);
  5. Deterioration of a chronic disease - IGG (+), IGA (+), IGM (+)
  6. When the disease is demonstrated and treated, the minus values of all antibodies are reached only six months after the treatment, sometimes after 1-2 years.

The reliability of the analysis of Elisa

The Elisa method results in the reliability level of 90% for the diagnosis of an infection with ascarids, pinworms (enter and toxocars and others that cause the formation of IgG immunification lobulin in large quantities.

  1. You can determine the lambiosis by a separate and general (opd) value of the level of the antibodies in the blood.
  2. The value of OPD is more than 1 suggests that there is or was an infection,
  3. With a value of less than 0.85 there is no lamblia.
  4. If the value is in the interval, it is advisable to repeat the analysis after 2 weeks.

This method is characterized by a number of weaknesses.With the analysis you can determine the antibody developed in the body for the neutralization of helminthen and not the worms themselves.

  • It is therefore possible to achieve false positive and false negative results.
  • This also happens when patients who take medication,
  • Metabolic disorders and the presence of parallel of current chronic diseases.

General blood test, changes in parasite infection

You can indirectly suspect the presence of an invasion through a general blood test.Since the presence of worms influences the inner organs, the products of their vital activity enter the bloodstream and change their composition.Partial list of the results of the impact of the invasion on the blood parameters:

  • increased hemoglobin;
  • non -normative indicators for ESR;
  • excess eosinophils by 20%;
  • Zhelezia anemia.

If there are 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 the polymer chain reaction is considered fundamental in molecular diagnostics and is one of the most modern and precise for diagnosis for the presence of parasites in the body.

  • It is to recognize traces of DNA and RNA, which belongs to parasitic forms of life.
  • The essence of the polymerase reaction is the blood treatment so that the DNA, RNA by foreign organisms, is copied and distributed to a concentration that enables them to determine.

Serological blood test

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

  • Immunogenic antibodies of parasites are examined.
  • With the analysis you can identify a large number of parasitic forms, but do not allow you to determine the invasion level.
  • As with the IFA method, the serological analysis for diagnosis is indirect.
  • If the values of the OPD are high, it is advisable to survive the faith analysis.

Diagnosis according to blood can method

During the hemuscanication of parasites, a drop of "living" blood of a patient is examined on optical devices, in which you can also determine your larvae and fungus in addition to worms.

How to carry out a blood test for parasites

Blutunun from the elbow vein

The blood donation for parasites is carried out in a specialized laboratory.The blood for the analysis is taken from the elbow vein in the amount of 3-5 ml and placed in a dry sterile test tube.Before the analysis is handed over, it is recommended:

  1. Don't eat for 8 hours;
  2. Submit fat dishes and milk on dinner;
  3. Do not take alcohol and not carbonated drinks.
  4. Avoid excessive physical exertion, physiotherapy, radiation x -ray;
  5. refuse to take medication.
  6. A lot of drink is welcome.
  7. The conditions for donating blood on PCR are less strict because the degree of saturation does not affect the presence of DNA of parasites.

Analysis data

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