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Allergy can be detected by a blood test

Allergy can be detected by a blood test


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Prick test, or skin, is known as an allergy test method that involves applying an allergenic extract to the skin and then applying a small, superficial scratch on the skin to give the hypothesized allergy.

Allergy can be detected by a blood test

If, for a short period of time, for example, ragweed or cat hair becomes an itchy skin at the allergic site, it is clear what causes the symptoms. But how do you test for allergies and what can you identify with allergies?

What does allergen-specific IgE mean?

An allergy test is a blood test, ъn. allergen-specific IgE antibody assay tцrtйnik. But what is this antibody? Dr. Katalin Balogh We learned from the head doctor of Allergy Center in Buda that the immune system of an allergic patient produces antibodies against certain allergens against certain external stimuli. This antibody is IgE, which reacts with allergens and mast cells in the mucous membranes of the mucous membrane, resulting in substances such as histamine is released, which causes unpleasant allergic symptoms. The allergen-specific expression is specific to the particular allergen (which causes the allergic symptoms), that is, it is based on the specific IgE detection, so as well as what is causing the symptoms.

The allergies tested depend on the symptoms

Depending on the patient's allergic symptoms, there are several types of IgE tests that can be performed, says dr. Katalin Balogh. If the patient suffers from cough, nasal congestion, or cough, we test for inhaled inhalation allergies. Examples include birch, ragweed, cat hair, alder hazelnuts. If you have stomach, gastrointestinal complaints, you should test for food allergies - such as eggs, cows' milk, casein, potatoes, fruits - but depending on your complaints, they may require a mixed examination.

Examination procedure

The examination is carried out after the patient is interviewed and there is no need for a blood test, and it can be performed at any time of the day. A blood sample taken from the arm is sent to the laboratory and the results are expected in a couple of days. Blood test a blood-soluble form of the antibody can be detected, the lab is investigating this. Because the antibody is allergen-specific, this assay can accurately determine the allergen selected for symptoms and the concentration in the blood.Dr. Katalin Balogh emphasizes that an allergy test by itself is not sufficient to accurately identify a patient's illness, and must always be compared with the patient's complaints. Determining the so-called relevance, that is, the unambiguous conclusion that it is possible that a allergic giving a positive result is the cause of the symptoms, is essential for diagnosis.

It can be done at any time

Unlike a skin test, a blood test can be done during an allergy season if the patient has symptoms, but also if they are taking antihistamines to relieve them. They do not influence the result of the blood test. However, the test can be performed not only during the season but also after the symptoms have disappeared, as the IgE level remains high even if the allergen is not present, its value only decreases very slowly.



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