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What is an allergy? When the body is exposed to a substance it views as "foreign", the immune system produces antibodies to combat those substances. The antibody binds to elements within the blood cells to fight off the so-called foreign substance. When the blood cells can no longer absorb the antibody, histamines are released that cause the unpleasant allergy symptoms. With other words, Allergy Is An Abnormal Reaction To A Substance That Is Usually Considered Harmless. These substances which can be inhaled, ingested or even absorbed through the skin, are known as allergens. |
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What is IgE? When an allergic person is exposed to an allergen, the immune system produces and antibody, called Immunoglobulin E (IgE). It is the production of this antibody that eventually causes allergy symptoms; sneezing, runny nose, headaches, stomach cramps, joint pain and others. |
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When do allergies appear? This depends on the cause of allergy problems. If it in an allergy due to pollen, you should see more symptoms when the plant causing the irritation releases its pollen. If you have a allergies to indoor substances, such as house dust or food related allergies, you are more likely exhibit year-a-round symptoms. |
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Have can you have allergies diagnosed? A small sample of blood is drawn for diagnostic evaluation in the laboratory. This test is convenient, accurate, safe and inexpensive. The test measures the level of circulating IgE in the blood for each allergen tested. The greater the IgE level, the greater the allergic reaction will be. |
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Is the blood test as accurate as the
skin scratch prick method? Yes, the blood test is reliable, safe, painless and less expensive than the scratch allergy test. |
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What is the difference between allergy
and sensitivity? A true allergy is evidenced by the presence of specific IgE antibody in the blood. Often time people experience allergy like symptoms yet there is no evidence of the antibody in their blood. In these cases the person may have high sensitivity to the substance but not necessarily allergy. |
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