Test for allergy
The action of the immune system of each person is aimed at protecting the body from pathogenic viruses and bacteria. In addition, cells of the immune system are able to recognize and destroy cancer cells. However, in some cases this very complex defense system begins to overreact to absolutely harmless substances, such as homemade dust, animal hair, pollen of various plants, etc., which do not represent absolutely no danger to humans. Most of these irritants are not dangerous, but the very immune response to them poses a serious danger to health , and sometimes the life of a person.
The allergy test is designed to detect allergy-causing allergenic substances. Only after the final establishment of a provoking allergen, the doctor can prescribe appropriate appropriate treatment for him. I want to make a reservation right away that it is not possible to cure definitively of the allergy for today, however, taking certain medications, the right way of life and playing sports will help to forget about allergies for a rather long time. Treatment usually begins in winter, when the main provocateurs of this disease are as if "in hibernation"
Causes for an allergy test
The allergy test reveals a provoking allergen with a 100% guarantee and very quickly. Thanks to this, the prescribed treatment will be adequate and effective. However, there are other reasons that we list below:
• This test will help to identify and other pathogens of allergies, which a person previously did not even suspect
• Guaranteed confidence that the body does not adequately respond, for example, to household dust, makes it possible to act immediately and effectively, in particular, to start taking antihistamines or to conduct allergen-specific immunotherapy
• In case of not confirming the allergic nature, the allergy test can detect other diseases, for example - in the case of a lack of enzymes, dairy products may develop a rash that looks like an allergic one. According to external signs, allergies are often similar to diseases such as pancreatic diseases, fungal skin infections, chronic bronchitis , psoriasis, and others.
• Without a test, it is impossible to distinguish a drug allergy from pseudoallergia. This is due to the fact that drug intolerance is observed in both cases
The allergy test is designed to refute or confirm the doctor's suspicions.
The most common tests are skin tests and a blood test for immunoglobulin E. These tests are not interchangeable, since their task is to supplement each other. The analysis of blood and several samples, as a rule, is sufficient to identify the allergen-provoking disease. In exceptional cases, it is not immediately possible to determine the culprit of poor health. In such cases, a test is carried out on a mixture of various provocateurs, after which, by elimination, the range of suspected allergens narrows and the provoker is established.
The skin test implies that the test substance must fall directly into the thickness of the skin, for which a superficial injection is usually done. Initially, the most common allergens (house dust, pollen of plants, etc.) are investigated, for which small punctures are made on the skin of a special needle, onto which several drops of the solution of the allergen chosen for the sample are applied. Thus, a small amount of the test substance droops into the surface layer of the skin. You can usually evaluate the result in 15-20 minutes. In the event that the subject has an allergy to the substance administered, swelling and redness will occur at the puncture site.
Along with skin tests are often conducted provocative tests. These samples are based on the reproduction of allergic reactions by introducing a provoking allergen into the tissue or organ that is most often affected in this disease. Provocative tests are divided into inhalation, nasal and conjunctival. An inhalation provocative test is performed to establish an allergy to certain foods and to diagnose bronchial asthma. Conjunctival test consists in instilling the chosen allergen into the nose or the lower conjunctival sac. In the case of itching, redness or lacrimation, the reaction is considered positive.
Are tests dangerous? If the allergy test is carried out in a specially trained for this polyclinic conditions by qualified personnel, the probability of complications is extremely small. Nevertheless, there are people with such a strong reaction to the allergen that the introduction of even a microscopic amount of substance can lead to serious consequences, up to the danger to life. In this respect, provocative tests are the most dangerous and powerful, which can be manifested by a fit of suffocation and extensive skin rashes. It is for such cases that the allergist should always have an allergy-suppressing essential medicine
Tests for allergies - are there any mistakes?
The probability of false answers is about 10%, and these misses usually occur in cases of errors in the diagnosis or if a drug was immediately taken before the test. A couple of minutes before the test, to exclude the error, the skin is applied additional droplets, one of which must necessarily be r-r histamine. If there is no reaction, skin tests will not give 100% guarantee. The second droplet contains a control liquid with diluted allergens. Reactions to precisely this rr, contrary to logic, should not be
Express-test for allergy
Not so long ago, the world's first home test for allergies Imutest, capable of detecting several allergens at once, was presented to the general public. In this case, the results of this test are no different from the results of the test if it were performed in out-patient settings. In application Imutest is very simple, since it is designed for independent home use.
The basis of his work is to identify in the blood of a specific immunoglobulin class E. Along with skin tests, this type of testing worldwide is considered to be the "gold standard".
According to statistics, out of ten, ten people with allergies are sensitive to the cat's epithelium, pollen of plants or to house dust. Imutest determines the sensitivity to this triumvirate of key allergic triggers that cause symptoms of rhinitis, eczema and asthma. It is assumed that in the case of a negative result for these three allergens, the observed symptomatology may not be caused by allergies.
Imutest works very simply. For analysis, a single drop of blood is taken with the aid of an automatic disposable lancet, which is then added to the test device and diluted with a buffer solution. For thirty minutes, the test results will appear on the test device in the form of one / several red lines.
Test for allergy Imutest - registered med. purpose, clinical trials of which showed complete coincidence of the results with skin tests and radioallergosorbent tests (RAST).