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Turkey-Specific IgG, Serum — Radioallergosorbent Test (RAST), Qualitative

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

A blood test that detects IgG antibodies to turkey proteins. It is a legacy test and does not by itself confirm a turkey allergy.

Quick summary

["A positive result shows prior exposure or sensitization to turkey, but allergy must be assessed using symptoms and other allergy testing."]

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

Key facts at a glance

LOINC
21583-0
Short code
Deprecated Turkey IgG RAST Ql
Synonyms
Deprecated Turkey IgG RAST Ql
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
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 looks for turkey-specific IgG antibodies in your blood using a radioallergosorbent test, or RAST. IgG antibodies can develop after exposure to turkey proteins.

Why might I need this test?

It may be used to investigate suspected exposure to turkey or support evaluation of a reported food reaction. Because this is a deprecated test, a clinician may prefer newer, standardized food-specific IgE testing and your medical history.

How is the test performed?

A blood sample is collected and tested for antibodies that recognize turkey proteins. The result is reported as positive or negative for detectable turkey-specific IgG.

How do I prepare for the test?

No special preparation is usually required, and you may eat turkey as usual unless your clinician gives different instructions. Tell your clinician about any allergic symptoms, recent turkey exposure, and medicines you take.

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

Turkey-Specific IgG (RAST)

Frequently asked questions

Does a positive turkey IgG result mean I am allergic to turkey?
No. Turkey-specific IgG can occur after exposure without causing an allergy. Your clinician will consider symptoms, timing, and food-specific IgE or other appropriate testing.
Is this the same as a turkey IgE test?
No. This test detects IgG antibodies, while food allergy is generally associated with IgE-mediated sensitization. A turkey-specific IgE test may be more relevant when immediate symptoms suggest an allergy.
Why is the test described as deprecated?
It is a legacy testing method and is no longer routinely recommended for diagnosing food allergy. Newer standardized tests and clinical evaluation are usually preferred.
  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