Tests for parasites

According to experts, the growth of the infecting population of parasites is affected by tourism (invasion occurs through food and water in exotic countries), migration of the parasites are transferred to developed country flows of people from the countries of Africa and Asia.

Bulk shipments of contaminated products from Asian countries (fish and seafood), breaking technology in the manufacture of meat products, which are produced by uncontrolled companies from the contaminated raw material, dramatically increases the risk of infection in all layers of the population.

Parasites, their effect on the body

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In the human body can live organisms that feed on his cells and intended food for him, giving nothing in return. These creatures are parasites.

Distinguish more than hundreds kinds of these organisms which can settle in all parts of the human body – from the esophagus to the brain. Various, and their size – from microscopic protozoa to meter worms. In humans live in two types of helminths:

  • round, or nematodes;
  • flat, which are divided into tapeworms and flukes.

Tests to identify the parasites are assigned to diagnose when:

  • pain and discomfort in the gut, digestive disorders that occur stool disorders, flatulence, inflammatory diseases;
  • various allergies;
  • pain in the joints;
  • changes in weight in either direction;
  • the decrease in immune protection;
  • a state of chronic fatigue;
  • bruksizme, sleep disorders, excessive nervousness;
  • skin diseases;
  • diseases of the respiratory tract.

Massive invasion or large size worms impair the functioning of the digestive tract and bile ducts, causing inflammation of the liver and constipation, the waste products of helminths provoke flatulence and diarrhea.

The body's response to substances secreted by parasites, leads to inflammatory diseases and pain of the joints, increased development of specific blood cells that cause allergies.

On the occurrence of parasites in the human body show growths and inflammatory disease of the skin – rash of various kinds, warts, boils.

Waste products secreted by worms in the blood, greatly weaken not only the immune but also the human nervous system, causing anxiety and depression, causing fatigue.

The state of chronic poisoning, constant stress, an acute shortage of nutrients in the body, which are caused by helminths – a direct path to the development of tumors.

Usually, the poisoning of the body and cause powerful allergic roundworms and Trichinella, bleeding and anemia due to injury of internal organs provoke anakilostomi, clogging the intestines and the lumen of the bile ducts can roundworm, acute nutrient deficiencies cause tapeworms. Tests for parasites allow you to properly establish the diagnosis of anemia, allergies, various disorders of weight and to appoint adequate treatment.

Methods of determination of infestation

To confirm the diagnosis on the presence of worms in the body it is necessary to use the full range of available laboratory practices.

Most accurately confirm or refute the diagnosis can only:

  • the presence of specific antibodies in the blood;
  • helminth eggs in the stool or the tissues of the body;
  • discovered part of the adult helminth or their larvae in taken for analysis samples of faeces or tissues.

Other used laboratory methods (x-ray, biorezonansnoe scanning) will not be able with complete certainty to confirm the presence of parasites in the body of the patient, but will help to identify lesions and to establish the possibility of the existence of parasites in the brain, retina of the patient.

Many people are interested in what tests you need to pass the patient to confirm glistnogo infection? Ways to detect parasites in the body are divided into:

  • clinical, in which the analyzed biological fluids of the human body (blood, feces, urine, gastric juice), vomit, swabs from the skin and mucous membranes, is the study of the immunological state of the organism;
  • biological, which examines already found in the body of the parasite, its development cycle and contamination of the inner man;
  • morphological, while examining tissue samples taken from parts cell bodies that are suspected of infestation.

One of the clinical methods (detailed analysis of feces for parasites) traditionally used in the diagnosis of worm infestation. But the method is not reliable – if the life cycle of the worms does not coincide with the study period and eggs are not detected in the faeces – this is not evidence of their absence.

For a more precise study carried out several cycles of research, but it does not guarantee the accuracy and completeness of analysis for the presence of parasites in the human body.

If there is a suspected infestation glistnuyu tissues (cisterikoz or trichinosis), biopsy, for a more complete diagnosis. Serological study of blood plasma allows to determine the localization of the infection in the human body (the intestines, brain, liver).

If feces or vomit has a copy of the parasite, biological research will help to make a diagnosis and establish a treatment plan, if fragments of the parasites is not enough to determine the type of infestation, is the multiple fence material and a few study cycles every 3-5 days.

General clinical methods

Upon defeat worms in human organs, the doctor sends to the target analysis for the detection of parasites – diagnosis of those liquids in which exactly found their tracks (Kal if you suspect intestinal worms, gall – and liver lesions). What are the tests for this?

Assuming glistnuyu infestation on regular assignments will be General clinical examination and diagnosis.

Standard stool

The first method allows you to identify intestinal infestation by such parasites:

  • nematode – vlasoglavami, askaridami, tominksom, krivogolovkoi;
  • flukes – various dvuustkami, shitosomoi;
  • lentochnikami – cepnyami and lentecami (small and wide).

To determine the eggs of worms, their fragments and larvae, cysts, protozoa using microscopical methods. Usually after the detection of the biological material additional methods of analysis are applied.

Tests to identify the remains of parasites is repeated a month after the completion of the prescribed treatment. In total there will be three intake stool after 3-4 days to monitor the appearance of eggs. A negative value of the third blood test for parasites, treatment was effective.

A detailed examination of feces

Such an integrated analysis allows to detect parasites in the body due to the exclusion of the subjective factor in the analysis (occasionally, a technician may notice biological material worms). To determine the infestation using the method of polymerase chain reaction that detects DNA parazitiruyushego in the body of a human, even if he died or is in the stage of the cysts.

A detailed analysis for parasites are often able to detect their traces in a patient, even if the results of earlier tests were negative.

This analysis on the parasites of the blood can be diagnosed to 17 species, which will allow you to assign the correct and effective treatment.

Analysis of feces after cleansing intestines

Using this method it is possible to detect intestinal parasites and Giardia.

For research need several attempts, their form thus: the patient is given a laxative, after each stool sample is taken, numbered, and then the next day their analysis is carried out. Usually signs of infestations appear not earlier than 5-6 sample. Even if you receive a negative result, it is safe to say, that worms in the body no – the method has only 50% efficiency.

The study of mucus

Laboratory method for the study of mucus from the rectum allows to determine infestation lyambliyami (which in many cases are provocateurs irritable bowel syndrome) and some other types of parasites. For analysis with the help of special mirrors selected smear of mucus, which is subjected to microscopic examination.

To determine infestation ostricami apply a swab of the perineum. This morning take a scraping from the area closest to the anus (the pinworms crawl out to lay worms at night).

Blood tests


The study of feces sometimes are able to detect infestation. A more informative analysis of blood – he would be the best way to confirm the existence of parasites and to diagnose tissue invasion (Echinococcus, vlasoglavy are parasitic in the tissues, do not release eggs in the intestine and stool analysis can not detect it).

To investigate the blood parasites is possible through the detection of antibodies to a specific species of worms that will reveal their presence, the depth of the destruction of the human body. What is the blood test for parasites, which will determine entrenched in the body of the pest?

The modern method uses the antibody that is specific for each species and are produced in response to the toxins secreted by helminths.

Used types of analysis

To identify helminth infection are used:

  • immunofermentnoi diagnostic method (ELISA), based on the search and determination of specific proteins (immunoglobulins) are synthesized in the human body, as a response to the substances of the vital activity of parasites (antigens). ELISA blood parasites shows the presence of them in 9 cases out of 10 is the most effective method. Enzyme-linked immunosorbent assay will show a parasite species, level of destruction of the body and its process – marker is level of antibodies. This blood test for the presence of parasites is part of the integrated analysis for the presence of helminths (the study of liquids and body secretions on the eggs and cysts of worms under a microscope);
  • immunofermentnoi method of diagnosis is considered the best in regard to the possibility to detect traces of infestation with small numbers of parasites, parasitism in the tissues;
  • the method of polymerase chain reaction allows to perform the presence of foreign DNA in the patient, infected by protozoa, but does not allow to recognize the degree of infestation;
  • serological (which investigate the blood plasma) studies to detect antibodies that use the reaction of indirect agglutination, complement binding, immunofluorescence.

Enzyme-linked immunosorbent assay (ELISA) for parasites gives the opportunity to establish the fact of presence:

  • protozoa (Giardia);
  • organisms that affect the biliary tract, pancreas and liver;
  • tapeworms all kinds.

In some cases, a simple laboratory blood may indirectly indicate infection. Elevated levels of eosinophils (a type of leukocytes) is interpreted as an allergic response of the body. In many cases it shows on parasites such as roundworm, hookworm, pinworm.

On helminths may indicate undue reduction of mineralization of blood and fluctuations in the level of food enzymes.

The procedure of delivery of the analysis


For the most objective results, the patient must know how to be tested for parasites.

Dinner should be 8 hours before the blood donation when her rent in the morning – the patient not to eat Breakfast. Accepting spirits, beer and soft mixes stop for 48 hours, and sweet drinks for 24 hours before blood donation. 2 hours before that you can't smoke.

The medication is prohibited for 3 days before blood donation. If there are objective medical indications for drug therapy, before you take the test, you should discuss with your doctor. 24 hours before the procedure, you should not undergo ultrasound or CT scan, fluoroscopy.

To be tested for parasites adult needs from a vein on the hand, if it is determined by infection of the newborn, the blood taken from the umbilical vein.

The research will show (or not detectable) traces of parasitic infestation, the result will be the basis for selecting a doctor and treatment regimens. The repeated blood sampling required for ELISA when receiving vague results, or as a follow-up examination after treatment. Between the tests need to withstand 14 days.

Additional methods of research

After examination and medical history, the doctor will determine what to be tested for parasites. In addition to basic, traditional research may be applied:

  • the study otkashlivaemoi sputum from the respiratory tract to determine the parasites, the basic cycle of life which takes place in the tissues of the lungs and into the intestine (nematodes, intestinal ugrici);
  • a urine test to determine the flukes or shisomatid;
  • microscopic study of blood taken within 3 days every 6 hours without interruption (to detect nocturnal activity of parasites);
  • the fence is a piece of potentially diseased tissue – the muscles in the tapeworm, liver – "stray" worms, hydatid growths on a special kind of tape worms;
  • the material of the hollow organs with the help of vacuum devices (colon, lung, 12-duodenum and other organs).

Properly conducted research will help the doctor to determine the cause of the disease and do not treat non-existent disease.