Description
Total IgE
Sample Type: Serum
Tests Included:
Total Immunoglobulin E (IgE) measurement
Sample Required:
Blood sample
Test Time:
Results are typically available within a few days.
Test Range Values:
Normal total IgE levels vary based on age, with higher levels in children. Adult levels are generally below 100 international units per milliliter (IU/mL).
What is the test?
This test measures the total level of Immunoglobulin E (IgE) antibodies in the blood. Elevated total IgE levels can indicate allergic conditions, such as allergies to pollen, dust mites, or certain foods.
Test Procedure:
A blood sample is drawn from a vein, and the concentration of total IgE is measured in the laboratory.
When to take the test:
When a healthcare provider suspects allergies or allergic asthma based on symptoms like recurrent sneezing, nasal congestion, wheezing, or skin rashes, they may order this test.
Who should take the test:
Patients with symptoms suggestive of allergic conditions or those with a family history of allergies may require this test for diagnosis and management.
Precautions for exceptional cases (pregnancy, etc.):
Total IgE levels can be influenced by pregnancy and certain medications. Pregnant individuals should inform their healthcare provider about their pregnancy status for accurate interpretation of the results.
Frequently Asked Questions (FAQs) for Total IgE Test:
Q1: Can high total IgE levels pinpoint specific allergies?
A: No, high total IgE levels indicate the presence of allergies but do not specify the allergen causing the reaction. Additional tests, such as specific IgE tests or skin prick tests, are used to identify specific allergens.
Q2: Can total IgE levels fluctuate due to environmental factors?
A: Yes, total IgE levels can be influenced by environmental factors, including exposure to allergens. It’s essential for individuals undergoing testing to inform the healthcare provider about recent exposures or changes in their environment.
Q3: Can total IgE levels decrease with allergy treatment?
A: Yes, successful allergy treatment, such as allergen immunotherapy (allergy shots) or avoidance of specific triggers, can lead to a decrease in total IgE levels over time as the allergic response is controlled.
*Please note that specific testing protocols and guidelines may vary based on the latest recommendations from health authorities and regulatory agencies. It is essential to consult healthcare professionals and follow local testing guidelines for accurate and appropriate testing.
