Allergen-specific immunoglobulin M (IgM)
Also Known As: Allergen-specific immunoglobulin M (IgM)
Consult for Allergen-specific immunoglobulin M (IgM) at
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About the Test
Description:
IgM is the first type of antibody produced in response to an allergen and is generally present in high levels in the blood immediately after exposure to the allergen. It plays a role in the early stages of the immune response to allergens and may help to neutralize the allergen and prevent it from causing harm.
IgM levels can be measured through a blood test called an allergy panel. This test is often ordered by a healthcare provider to help diagnose allergies or to monitor the effectiveness of treatment for allergies.
Clinical Significance:
High levels of IgM may be a sign of an allergic condition, such as hay fever or asthma. However, it's important to note that a single test result for IgM levels may not provide enough information to diagnose a medical condition. It's important to consider other factors such as a person's medical history and any other symptoms they may be experiencing.
Prep Checklist
| Activity | Required for the test |
|---|---|
| Avoiding Alcohol Consumption |
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| Fasting (24hrs) |
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| Avoiding Smoking |
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| Avoiding Strenuous Exercise or Sexual Activity |
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| Avoiding Medicines and/or Supplements |
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More about Tests
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Target Levels (where applicable)
The normal range for allergen-specific immunoglobulin M (IgM) varies depending on the specific test being used and the reference range provided by the laboratory. In general, normal IgM levels are usually considered to be within the range of 5 to 100 milligrams per deciliter (mg/dL).
What is being checked
Serum IgM test: This is the most common type of test used to measure IgM levels. It involves taking a sample of blood from a vein, usually in the arm, and sending it to a laboratory for analysis.
Skin prick test: This test involves applying a small amount of an allergen to the skin and observing the reaction. It may be used to help diagnose allergies.
Patch test: This test involves applying a patch containing an allergen to the skin and observing the reaction. It may be used to help diagnose allergies or to determine the cause of skin irritation.
It's important to note that a single test result for IgM levels may not provide enough information to diagnose a medical condition. It's important to consider other factors such as a person's medical history and any other symptoms they may be experiencing. If you have concerns about your IgM levels or are experiencing any unusual symptoms, it's important to discuss them with your healthcare provider. They can help determine the cause of your symptoms and recommend appropriate treatment.