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Wheat Stem Rust-Specific IgE, Qualitative (Deprecated)

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

A qualitative test for IgE antibodies directed against wheat stem rust, an uncommon fungal pathogen that can cause allergy symptoms after exposure.

Quick summary

["A positive result suggests an allergic sensitization to wheat stem rust, but symptoms and exposure history must also be considered."]

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

Key facts at a glance

LOINC
16088-7
Short code
Deprecated Wheat Stem Rust IgE RAST Ql
Synonyms
Deprecated Wheat Stem Rust IgE 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 is a qualitative laboratory test that looks for allergen-specific IgE antibodies against wheat stem rust. Wheat stem rust is a fungal disease that affects wheat and can occasionally cause allergy symptoms in people exposed to infected grain or plant material.

Why might I need this test?

The test may be considered when a person has symptoms such as sneezing, wheezing, hives, or other allergic reactions after handling wheat, grain, or plant material contaminated with the fungus. This is a specialized test and is not commonly used for routine evaluation of wheat allergies.

How is the test performed?

A blood sample is tested for IgE antibodies that recognize wheat stem rust antigens. The result is reported as positive or negative rather than as a measured concentration.

How do I prepare for the test?

No special preparation is usually required for this type of blood test. Tell your healthcare professional about your symptoms, occupation, and any recent exposure to wheat or rust-infected plant material.

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

Wheat Stem Rust IgE

Frequently asked questions

Does a positive result mean I am allergic to wheat stem rust?
It indicates that your immune system has produced specific IgE antibodies to the fungus, which is consistent with sensitization. Your clinician can assess whether this finding explains your symptoms.
Can this test diagnose ordinary wheat allergy?
No. It targets the wheat stem rust fungus rather than the usual wheat proteins responsible for common wheat allergies.
Why is this test marked as deprecated?
The test is a legacy or specialized assay and may not be widely available or may have been replaced by a newer laboratory method. Your healthcare provider can determine whether an alternative allergy test is more appropriate.
  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