LabInformationLab tests, explained

Corn Smut (Ustilago) Allergy Test in California

Corn Smut (Ustilago) Allergy Test can be requested without a referral, and this overview covers what to expect. The corn smut (Ustilago) allergy test is a blood test that checks for allergic sensitization to corn smut, a fungus that grows on corn. It is usually ordered when a person has allergy symptoms that may be linked to corn or corn-based products, or when other tests have not found a clear cause. Across California, part of Pacific, the corn smut (ustilago) allergy test can be ordered directly and collected at a certified site — no referral required.

Sample type
blood
Category
Allergy
Turnaround
1-3 business days
Price
$49
Referral
Not required

The corn smut (Ustilago) allergy test is a blood test that checks for allergic sensitization to corn smut, a fungus that grows on corn. It is usually ordered when a person has allergy symptoms that may be linked to corn or corn-based products, or when other tests have not found a clear cause.

What it measures

  • Ustilago-specific IgE — Antibodies that can trigger allergic reactions to corn smut.
  • Total IgE — A general measure of allergic tendency, sometimes included for context.
  • Other mold-specific IgE — May be checked to see if symptoms are due to other molds.

Who it is for

This test is typically ordered by an allergist or primary care clinician for people with unexplained allergy symptoms, especially those who handle or eat corn products.

Preparation

No fasting or special preparation is needed. The blood sample can be taken at any time of day.

Results and what they mean

Results are reported as a level of specific IgE, often as a number or class. A clinician interprets the result along with your symptoms and history; a positive test alone does not mean you have an allergy. This is general information only and not medical advice.

Requesting the Corn Smut (Ustilago) Allergy Test in California

Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. With coastal metros, inland towns, and rural counties with very different access to testing, it pays to schedule your collection in advance.

Frequently asked questions

What is corn smut?

Corn smut is a fungus that can grow on corn. Its spores may cause allergic reactions in some people.

Does a positive result mean I am allergic to corn?

Not necessarily. A positive result shows sensitization, but only a clinician can determine if you have a true allergy.

How long do results take?

Results are usually available within 1 to 3 business days.

Is this test painful?

It is a standard blood draw, which may cause brief discomfort.

Corn Smut (Ustilago) Allergy Test by city in California

All testing in California →   Full Corn Smut (Ustilago) Allergy Test guide →