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Food Allergy Immunoglobulin E (IgE) Screening Panel

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

This test measures levels of Immunoglobulin E (IgE), a type of antibody your body produces in response to certain foods. It helps identify potential allergies to common triggers.

Quick summary

["IgE testing helps determine if you may have an allergic reaction to specific foods."]

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

Key facts at a glance

LOINC
46708-4
Short code
Food Allerg Mix1 IgE Qn
Synonyms
Food Allerg Mix1 IgE Qn
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 IgE Testing Measures

IgE antibodies are part of your immune system’s defense against allergens. When your body detects a food protein it perceives as harmful, it may produce elevated IgE levels. This test screens for IgE antibodies against a mix of common food allergens, including dairy, eggs, peanuts, tree nuts, fish, shellfish, wheat, and soy.

How the Test Works

Your blood sample is analyzed using immunoassay methods to detect IgE antibodies specific to each allergen. The results help identify which foods may trigger allergic responses in your body.

Why It’s Done

Doctors may recommend this test if you experience symptoms like hives, swelling, difficulty breathing, or digestive issues after eating certain foods. It’s also used to confirm suspected food allergies before starting an elimination diet.

What to Expect Before the Test

No special preparation is needed. You’ll have a small blood sample drawn from your arm, similar to a routine blood test. It usually takes a few minutes, and you can return to normal activities afterward.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgE Food Allergy Screen

Frequently asked questions

IgE levels alone don’t confirm a food allergy. They may indicate a heightened sensitivity but aren’t definitive. A doctor will interpret results alongside your symptoms and medical history to guide further testing or management.
This test is a screening tool, not a diagnosis. If your IgE levels are elevated, your healthcare provider may recommend additional tests, such as skin prick tests or elimination diets, to confirm allergies and guide treatment.
How accurate is this test?
IgE testing is generally reliable for detecting allergies but isn’t perfect. False positives or negatives can occur, especially with complex allergies or cross-reacting foods. Results should always be reviewed by a healthcare professional.
Can I eat normally before this test?
Yes, you can eat your regular diet before the test. No special diet or fasting is required, as IgE testing measures your body’s natural immune response to foods.
  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