Test library
Corn Fungus Allergy Test
This blood test measures IgE antibodies to corn smut spores, a fungal allergen that can affect people who work with or live near affected corn crops.
Order Corn Smut (Ustilago) Allergy Test
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Corn Smut (Ustilago) Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The corn smut allergy test detects immunoglobulin E antibodies against spores of the corn smut fungus, Ustilago. Corn smut grows on corn plants and releases spores that can become airborne, particularly around affected crops. The test is intended for people with respiratory or skin symptoms after exposure to moldy or smut-affected corn. A healthcare provider interprets the result with your exposure history.
What this test measures
This test measures allergen-specific immunoglobulin E against corn smut fungal proteins and spores. Corn smut is a fungus that forms distinctive growths on corn ears and stalks and releases dark spores when mature. People who handle affected crops or work in agricultural settings may inhale these spores. Symptoms can resemble other mold allergies and include nasal congestion, coughing, or eye irritation. The immunoassay reports a quantitative antibody level and an IgE class.
A blood sample is collected through a standard venipuncture and analyzed in a laboratory. Results are reported in kilounits per liter, and total IgE and eosinophil counts may be included for context. Because fungal allergens can cross-react, a broader mold panel can help distinguish corn smut sensitization from reactions to other fungi such as Alternaria or Cladosporium. Exposure assessment is an important part of interpretation.
People order this test when symptoms occur around agricultural work, stored grain, or moldy corn products. It may also be part of a mold allergy workup for rural residents. Testing identifies sensitization rather than a confirmed disease, so a qualified healthcare provider should interpret the result with your work, home environment, and symptom pattern.
- Corn smut (Ustilago)-specific IgE antibodies
- Quantitative sIgE concentration reported in kU/L
- Allergen-specific IgE class on the zero to six scale
- Total serum IgE
- Blood eosinophil count
- Related mold IgE markers when a broader panel is included
Why people order this test
- Evaluate respiratory symptoms linked to agricultural exposure
- Investigate reactions around moldy or smut-affected corn
- Distinguish corn smut sensitization from other mold allergies
- Support an occupational allergy discussion
- Provide objective data for an allergy management plan
How to prepare
No fasting is required for this allergy blood test, and a single blood draw is typically enough. Follow the instructions provided by the laboratory and tell the collector about your work environment and any medications.
Understanding your results
Results are generally reported within one to three business days. A positive result indicates IgE antibodies to corn smut allergens, which reflects sensitization rather than a diagnosis. A healthcare provider should interpret the level with your exposure history and other mold test results.
Corn Fungus Allergy Test by state
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Corn Fungus Allergy Test across Colorado.
Connecticut
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Delaware
Corn Fungus Allergy Test across Delaware.
Florida
Corn Fungus Allergy Test across Florida.
Georgia
Corn Fungus Allergy Test across Georgia.
Hawaii
Corn Fungus Allergy Test across Hawaii.
Idaho
Corn Fungus Allergy Test across Idaho.
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Frequently Asked Questions
What is corn smut?
It is a fungus that grows on corn plants and forms spore-releasing growths. Its spores can become airborne and act as allergens.
Who is most likely to be exposed to corn smut spores?
Agricultural workers, grain handlers, and people living near affected corn crops may have higher exposure.
Do I need to fast?
No fasting is required for allergy blood testing unless the laboratory instructs otherwise.
Can mold allergies cross-react?
Yes. Some fungal allergens share proteins, so broader mold panels are sometimes used to clarify results.
What symptoms can fungal spore exposure cause?
Nasal congestion, sneezing, coughing, and eye irritation are common. A provider evaluates whether an allergy is involved.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.