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Blood test for parasites

Parasites live in the human body that causes the instability of unclear cause.It can be skin rash, flatulence, heartburn, nausea, weakness, anemia, joint pain.To clarify the diagnosis, special tests should be done.

Parasites can live in the human body

Hemoscania of blood decreases for parasites

Classification of parasites in their appearance:

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

For representatives of some industries (for employees of businesses to serve, children's organizations), egg analysis of worms are required in sanitary book design.Children pass the same analysis when they are accepted to kindergarten and a nursery or in a sport.

  • A classic study of worms living in the gastrointestinal tract is an analysis and a layer of mucosa from the rectum.
  • But there are some options for more effective blood tests for parasites, as intended and by method.

Classic research on worms

A classic study of worms living in the gastrointestinal tract (digestive tract), for example, worms, Ascarides, is an analysis and mucosal scratch from the rectum.But an analysis of the feces may not show positive results, so it should be done three times.

  1. To analyze and shave, the method of learning tissue is used (see the cuts of the material under the microscope).The effectiveness of research is about 20%, because the low probability of eggs or parasitic larvae will fall into an analyzed material.
  2. The controversial studies for helminths, simple parasites and mushrooms in the body are electronic methods.Their nature is to obtain results using the biological reaction measurements of the operating points with electrodes.For this purpose, special devices are used.Many doctors find skeptical research data.
  3. Checking the most information about parasites is a blood test.

Blood tests for parasites

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

  1. Elisa or blood immunity;
  2. PCR or polymerase chain reactions;
  3. Hemoscaning;
  4. Serum blood test.

Elisa, analysis for antibodies and Immunoglobina

This analysis is based on the body's immune response, its level of protection reactions to the invasion of parasites.When antibodies formed in the human body form to respond to the penetration of pathogens or simply a foreign protein in his blood, they are called Immunoglobulin.

  • Using Elisa's results, you can determine the presence of helminths in the body and their type.The accuracy of the study is much higher than the analysis.
  • This method is based on the calculation of antibodies in the body with one or another parasite, determining their relationship with foreign antigens (immune reactions) and the body's enzyme reaction.
  • Antibodies - antigens show the presence of infection.
  • A blood test of Elisa has accuracy, according to different experts, from 60% to 90% even at low aggression.
  • The advantage of the method, in addition to high accuracy, is an immune analysis -can be monitored by the dynamics of the disease over time.

IFA blood test for parasites

Analysis for antibodies looks like a set of characters that indicate these antibodies or they are called immunoglobulin.

  • In total, 5 of them were studied - IgG, IgA, IGM, IGD.
  • In practical medicine, the first four Immunoglobulin are very important.

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

IGM - Immunoglobulin, appearing in the acute phase of the disease, showing the beginning of the infection.

  • Appeared in the blood on Thursday,
  • It was discovered by analysis after 6 weeks.
  • Then he began to disappear quickly.

Ige - Marking, indicator of parasites

Ige - Immunoglobulin shows the presence of parasites or allergies in the human body.

  • A sign of allergies related to allergies,
  • It circulates less in the blood, based on mucous membranes, mucus and baSophiles,
  • Participate in immunity answers to infection with parasites.

IgG - Signs of disease and immunity

IgG - Immunoglobulin, appears during the disease.

  • IgG also preserves after treatment, for some lifetime infections, for example, measles, rubella and others.
  • The detection of immune globulin in the blood says that the body has had this infection before, with this specific pathogen.

Results of analytical analysis analysis

For the various combinations of the plus points and deductions in blood tests for parasites, the following conclusions may be drawn:

  1. Lack of infections - all antibodies with minus points;
  2. Acute-Igg phase (+/-), IgA (+\-), IGM (+);
  3. Chronic-type samples (+/-), Iga (-), IGM (-);
  4. The presence of immunity-Igg (+), IgA (-), IGM (-);
  5. Expensive to one more chronic disease - IgG (+), IgA (+), IGM (+)
  6. If the disease is detected and treated, the minus values of all antibodies will only reach six months after the treatment process, sometimes after 1-2 years.

The reliability of Elisa analysis

The Elisa method gives 90% reliability for the diagnosis of Ascarides infection, batteryworm (Enteriobiosis), toxins and other types that cause the formation of Immunoglobulin IgG in large quantities.

  1. You can identify the Lambliosis with a unique and common value (OPD) of the level of antibodies in the blood.
  2. The value of OPD is more than 1 indicates that there is an infection either,
  3. With a value of less than 0.85 without Lamblia.
  4. If the value is within the time, it is advisable to repeat the analysis after 2 weeks.

This method is characterized by some weaknesses.Analysis allows you to determine the level of antibodies developed in the body to neutralize helminths, not worms themselves.

  • Therefore, there may be false negative results and false negative.
  • This also happens when the patient uses the drug,
  • Metabolic disorders and parallel presence of current chronic diseases.

Blood test in general, changing parasites infection

You may indirectly doubt the presence of the invasion by performing a general blood test.Because the presence of worms affects the internal organs, the products of their important activity enter the blood, changing its composition.List of part of the results of the effect of the invasion on blood parameters:

  • Hemorrinoma;
  • Indicators are not patterned by ESR;
  • A blood cell excess 20%;
  • Zhelezia anemia.

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

Polymerase chain reaction, PCR analysis

PCR method, or polymer chain reaction, is considered the basic in molecular diagnosis and is one of the most modern and accurate methods to diagnose the presence of parasites in the body.

  • It includes detection of traces of DNA and RNA, parasitic.
  • The nature of the polymerase reaction is to treat blood in the way of copying and spreading DNA, RNA of foreign organisms to the concentration that allows them to determine.

Serum blood test

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

  • The immune antibodies of the parasite are studied.
  • Analysis allows you to identify a large number of parasitic forms, but do not allow you to determine the invasion phase.
  • Like the IFA method, seral analysis is indirectly for diagnosis.
  • If the values of OPD are high, it is advisable to pass the analysis.

Diagnosis by blood scanning method

In the process of hematopoiesis on parasites, a drop of blood of a patient studied by optical devices, in addition to worms, you can identify their larvae and fungi.

How to do blood tests for parasites

Blood barrier from elbow veins

Blood donation for parasites is performed in a specialized laboratory.Blood for analysis is taken from the elbow vein with a amount of 3-5 ml and is placed in a sterile sterile test tube.Before approving the analysis, it should be suggested:

  1. Do not eat for 8 hours;
  2. During dinner, giving up fat and milk;
  3. Do not drink alcohol and carbonated drinks;
  4. Avoid excessive physical efforts, physical therapy, radiation X -Ray;
  5. Refuse to take the drug.
  6. Abundant drinks are welcome.
  7. The conditions for donating blood for PCR are less stringent, because the level of fullness does not affect the presence of DNA of parasites.

Analysis date

  • The results of IFA and serum tests were issued within a week.
  • For PCR and Hemoscaning blood tests, a few hours are enough.
  • With the analysis results, you should definitely consult a doctor.