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Total Coconut IgE (Immunoglobulin E) Level

Published: August 9, 2026Updated: August 16, 2026

This test measures the total amount of Immunoglobulin E (IgE), a protein in your blood that your immune system produces in response to allergens like pollen, dust, or certain foods.

Quick summary

["IgE levels help identify allergies and allergic reactions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
39593-9
Short code
Coconut IgE/IgE total %
Synonyms
Coconut IgE/IgE total %
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What Is Immunoglobulin E (IgE)?

IgE is a type of antibody produced by your immune system when it detects allergens. High levels may suggest an allergic reaction or atopic conditions like asthma, eczema, or food allergies.

Why Might You Need This Test?

Your doctor may order this test if you have symptoms like sneezing, itching, hives, or breathing difficulties, or if you’re suspected of having an allergy to environmental triggers, foods, or insect stings.

When Is This Test Performed?

Blood is drawn from a vein in your arm, and the sample is sent to a lab for analysis. Results are typically available within a few days.

What Does a High or Low IgE Level Mean?

Elevated IgE levels often indicate an allergic response, while very low levels may suggest a weakened immune response to allergens or other underlying conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

IgE levels are primarily used to diagnose allergies, guide allergy testing (like skin prick tests), and monitor treatment plans for conditions like asthma or chronic urticaria.

Short name

Total IgE (Serum)

Frequently asked questions

Could my IgE test be affected by recent vaccinations or illness?
Recent vaccinations or acute infections may temporarily alter IgE levels, so it’s best to discuss any recent health events with your doctor before scheduling the test.
How long does it take to get results?
Results are usually ready within 2–5 business days, depending on lab processing times.
Is there anything I should avoid before the test?
Avoid taking antihistamines (oral) 24–48 hours before the test, as they can lower IgE levels and affect results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy