Skip to content

Food Allergen Mix 76 IgE (RAST) Test

Published: August 9, 2026Updated: August 17, 2026

A blood test that measures IgE antibodies to the foods included in the Food Allergen Mix 76 panel, helping assess possible food allergy sensitization.

Quick summary

["Elevated allergen-specific IgE may indicate sensitization to one or more foods in the panel, but it must be interpreted alongside symptoms and other allergy testing."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
82561-2
Short code
Food Allerg Mix76 IgE RAST
Synonyms
Food Allerg Mix76 IgE RAST
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
multidisk
CPT
84484
SNOMED
302774002
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 this test?

This test measures food-specific IgE antibodies using a radioallergosorbent test, also called RAST. It evaluates reactions to the group of foods included in the Food Allergen Mix 76 panel; the exact allergens covered depend on the laboratory’s panel.

Why might I need this test?

Your clinician may order this test if you have symptoms such as hives, swelling, wheezing, vomiting, or abdominal discomfort after eating certain foods. It may also be used when a food allergy is suspected but the history alone is unclear.

How is the test performed?

A blood sample is collected and tested in the laboratory for IgE antibodies to the foods in the panel. The results are reported as a concentration or laboratory-specific activity level, which your clinician will compare with the laboratory’s interpretation.

How do I prepare for the test?

Fasting is generally not required. Antihistamines and some other medicines may affect results, so tell your clinician and laboratory about medicines and supplements you use. Do not stop prescribed medicines without medical advice.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Food Allergen Mix 76 IgE

Frequently asked questions

Does a positive result mean I have a food allergy?
Not necessarily. It shows that IgE antibodies to one or more tested foods were detected, but the result must be compared with your symptoms and exposure history to determine clinical significance.
Which foods are included in Food Allergen Mix 76?
The exact foods can vary by laboratory and test version. Review the test report or ask your clinician which allergens were included before interpreting the results.
Can medicines affect this test?
Yes. Antihistamines and certain other medicines may influence results. Tell your clinician and laboratory about all medicines and supplements, but do not stop treatment without 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 17, 2026. · Read our editorial policy