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BDS, MDS - Oral Pathology and Microbiology

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Dr. Ashish Ranjan

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Allergy - Food (Vegetarian), EIA

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Allergy - Food (Vegetarian), EIA Test Includes 5 testsView All

You need to provide

Blood

This test is for

Male, Female

Test Preparation

No special preparation required

Overview

What is Allergy - Food (Vegetarian), EIA?

The Allergy - Food (vegetarian) test is done when a person is suspected to have an allergy against vegetarian foods such as milk and milk products, vegetables, nuts, starchy food, spices, fruits, and lentils among others.

Why is Allergy - Food (Vegetarian), EIA done?

The allergy - food (vegetarian) test is done when a person shows signs and symptoms of allergies such as allergy on the skin like hives, dermatitis, and itching. One may also experience respiratory allergic reactions such as coughing, nasal congestion, sneezing, and other allergic reactions.

What does Allergy - Food (Vegetarian), EIA Measure?

The allergy - food (vegetarian) test measures the levels of allergen-specific antibody. Allergy is a hypersensitive reaction of the immune system against certain substances. These substances known as allergens are seen in a few people and are responsible for causing allergic reactions.

Hypersensitive reactions are categorized into four types, I to IV. Categorization of these is based according to the part of the immune system which is activated and the time is taken by the reactions to occur.

In case of allergies, two types of hypersensitive reactions are commonly observed which include Type I - Immediate hypersensitivity and Type IV - Delayed hypersensitivity.

In the case of Type I reaction, a person's body produces immune proteins which are known as antibodies on exposure to the allergen. These produced IgE antibodies bind to the allergens and cause local reactions which can sometimes affect the whole body within a short period of time.

The Type IV reactions are caused when there is an interaction of allergens with specific sensitized immune cells and white blood cells which are called T lymphocytes.

Interpreting Allergy - Food (Vegetarian), EIA results

Interpretations

QUANTITATIVE RESULT IN kUA /L	LEVEL OF ALLERGEN SPECIFIC ANTIBODY	SYMPTOM RELATION
<0.10	Undetectable	Unlikely
0.10 - 0.50	Very low	Uncommon
0.50 - 2.00	Low	Low
2.00 - 15.00	Moderate	Common
15.00 - 50.00	High	High
50.00 - 100.00	Very high	Very high
>100.00	Very high	Very high

1. High IgE levels are found in asthma, allergic bronchopulmonary aspergillosis, primary immunodeficiency, parasitic infections, inflammatory diseases and some cancers.

2. Low IgE levels may be seen in auto-immune disorders. Clinical Utility: • Helps in screening and detecting allergies.

3. Measures the overall quantity of immunoglobulin E in the blood, not the amount of a specific type.

4. Antigen-specific IgE is the next step to identify the responsible allergen.

Answers to Patient Concerns & Frequently Asked Questions (FAQs) about Allergy - Food (Vegetarian), EIA

Frequently Asked Questions about Allergy - Food (Vegetarian), EIA

Q. Which reactions are not considered as allergic reactions?

Those reactions which do not occur by activation of the immune system are not considered as allergic reactions. These include food poisoning which is caused by bacterial toxins, genetic conditions such as lactose intolerance in which a person is unable to digest milk sugar, and gluten sensitivity in case of celiac disease. In addition to that, several medicines can also cause reactions as side effects in a few people.

Q. What is anaphylaxis and what are its signs and symptoms?

Anaphylaxis is a severe allergic reaction which is potentially life-threatening. It occurs within minutes when exposed to allergens in case of severe allergy. The signs and symptoms of anaphylaxis include skin reactions such as hives, itching, flushed or pale skin. It may also cause low blood pressure, constriction of the airways, swollen tongue, swollen throat, wheezing, difficulty in breathing, weak and rapid pulse, nausea, vomiting or diarrhoea, dizziness or fainting.

Q. How is the blood sample taken?

The healthcare provider takes a blood sample from the arm. The site from where the blood is to be withdrawn is cleaned with a swab of rubbing alcohol. This is then followed by inserting a small needle which has a tube attached to it for collecting blood. Once the sufficient blood for analysis is withdrawn, the needle is removed. The site is then covered with a gauze pad.

Q. Is there any risk associated with the withdrawal of blood sample procedure?

As such there is no risk but in few cases, bruising, bleeding, and infection at the puncture site can be seen. In very few cases, there can be swelling of the vein after the blood is withdrawn.

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Tests Included (5 tests)

Allergy, Individual Marker, WHEAT
Allergy, Individual Marker, MILK
Allergy, Individual Marker, POTATO
Allergy, Individual Marker, LENTIL
Allergy, Individual Marker, RICE

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