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Food Allergen Mix with Cigarette Allergen-Specific IgE

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

This test measures IgE antibodies to a mix of food allergens and cigarette allergen to evaluate possible allergic sensitization.

Quick summary

["A positive result suggests sensitization to one or more tested allergens but must be interpreted with your symptoms and medical history."]

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

Key facts at a glance

LOINC
24496-2
Short code
Food Allerg Mix C IgE RAST
Synonyms
Food Allerg Mix C 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 blood test measures allergen-specific IgE antibodies against a panel of food allergens and cigarette allergen. IgE is an antibody involved in allergic reactions.

Why might I need this test?

It may be ordered to evaluate suspected food allergy or symptoms that may be related to exposure to cigarette smoke. Results can help identify possible triggers, but they do not by themselves confirm a clinical allergy.

How is the test performed?

A blood sample is collected and tested for IgE antibodies to the allergens included in the panel. The laboratory may report which individual food or cigarette allergens show a detectable response.

How do I prepare for the test?

Fasting is generally not required. Antihistamines and some other medicines can affect results, so tell your clinician about all medicines and supplements you use; do not stop prescribed treatment without guidance.

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 and Cigarette Allergen-Specific IgE

Frequently asked questions

Does a positive result mean I am allergic?
It indicates possible allergic sensitization, but a diagnosis of allergy usually also requires compatible symptoms and, when appropriate, additional evaluation by a clinician.
Why is cigarette allergen included?
The cigarette component can help evaluate whether tobacco-related exposure may contribute to an allergic-type reaction or respiratory symptoms.
Should I stop taking antihistamines before the test?
Ask your clinician first, because antihistamines can reduce detectable IgE levels. Do not stop prescribed medicines without medical advice.
  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