Skip to content

IgE Immunoglobulin Allergen-Specific Testing (Food Allergens Mix)

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

This blood test measures levels of Immunoglobulin E (IgE), a type of antibody that your immune system produces in response to certain allergens, including common foods. It helps identify potential food allergies by detecting specific IgE antibodies against a mix of food proteins.

Quick summary

["This test helps determine if you may have an allergic reaction to certain foods."]

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

Key facts at a glance

LOINC
15219-9
Short code
Food Allerg Mix3 IgE Ql
Synonyms
Food Allerg Mix3 IgE Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
multidisk
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 Does This Test Measure?

The test looks for IgE antibodies directed against a panel of common food allergens. IgE antibodies are part of your immune system’s response to allergens, which can trigger allergic reactions like hives, swelling, or difficulty breathing. This mix includes allergens like milk, eggs, peanuts, tree nuts, fish, shellfish, wheat, and soy.

Why Might Your Doctor Order This Test?

Your doctor may recommend this test if you’ve experienced symptoms like rash, itching, swelling, or digestive issues after eating certain foods. It can also help confirm allergies suspected through history or skin prick tests.

What to Expect Before the Test

No special preparation is needed. You’ll have a small blood sample drawn from your arm. If you’re taking blood thinners or have a history of bleeding disorders, let your doctor know before the test.

What Are the Possible Results?

Results show whether you have IgE antibodies against the tested foods. Elevated levels in specific foods may indicate an allergic reaction risk. However, false positives or negatives can occur, so results should be interpreted by a healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgE Food Allergy Screen

Frequently asked questions

How long will I need to wait for my results?
Results are typically available within 3–5 business days, depending on lab processing times. Your healthcare provider will discuss the findings with you.
Can I eat or drink anything before the test?
No special diet is required. However, if you’re taking medications that affect blood clotting, inform your doctor beforehand.
What if my results show a positive reaction to a food?
A positive result suggests a potential allergy, but further testing (like an elimination diet or skin prick test) may be needed to confirm. Always consult your doctor for personalized guidance.
  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