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IGE Level

About the test
What is this test done for?
An Immunoglobulin E is a test done to measure one of the subclasses of antibodies in the body. Antibodies are proteins made by the immune system which protect against bacteria, viruses and allergens. These IgE antibodies are particularly found in lungs, skin and mucous membranes and are associated with allergic reactions.
Why is it Done?

The test is done as a part of an initial screening for allergies, when the following diagnosis or conditions are suspected:

  • Allergic conditions
  • Primary immunodeficiency
  • Infections
  • Inflammatory conditions
  • Malignancies
When should it be performed?

The test is ordered when the following symptoms are seen in a person:

  • Persistent itching
  • Rashes on skin
  • Itching in eyes
  • Eczema
  • Nausea, vomiting, persistent diarrheas
  • Recurrent sneezing, coughing, congestion
  • Difficulty breathing, wheezing.
How is it done
A blood sample will be collected from a vein in your arm. Fasting is not necessary.
Results
Results Reported in kU/L age wise
  • 0-5 months : Less than or =13
  • 6-11 months : Less than or =34
  • 1 and 2 years : Less than or =97
  • 3 years : Less than or =199
  • 4-6 years : Less than or =307
  • 7 and 8 years : Less than or =403
  • 9-12 years : Less than or =696
  • 13-15 years : Less than or =629
  • 16 and 17 years : Less than or =537
  • 18 years and older : Less than or =214
  • In adults, 150 to 300 kU/L is the normal range.
Positive results mean the person might be suffering from immune deficiency disorders or allergies. Negative results do not rule out the allergies. It has to be confirmed by other investigations.
Other Tests
In cases of allergies, eosinophil count can be assessed by doing a CBC.
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