Corn, Cultivated Allergy Test
Corn, Cultivated Allergy Test can be requested without a referral, and this overview covers what to expect. The Corn, Cultivated Allergy Test is a blood test that checks for an allergic response to corn (maize) proteins. It is typically ordered when a person has symptoms after eating corn or corn-based products, such as hives, stomach upset, or breathing trouble. The test measures specific antibodies that the immune system may produce against corn.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
The Corn, Cultivated Allergy Test is a blood test that checks for an allergic response to corn (maize) proteins. It is typically ordered when a person has symptoms after eating corn or corn-based products, such as hives, stomach upset, or breathing trouble. The test measures specific antibodies that the immune system may produce against corn.
What it measures
- Corn-specific IgE — The main marker; it shows whether your immune system has made antibodies to corn proteins.
- Total IgE — A general measure of allergic tendency; sometimes included for context.
- Cross-reactive carbohydrate determinants (CCDs) — Sugar-linked markers that can cause false positives; some labs check for them.
Who it is for
This test is usually ordered by an allergist, immunologist, or primary care clinician for people who have had allergic symptoms after eating corn or corn-derived ingredients.
Preparation
No fasting or special preparation is needed. You can eat and drink normally before the blood draw.
Results and what they mean
Results are reported as a number or class (for example, negative or positive) for corn-specific IgE. A clinician interprets the result along with your symptoms and history, because a positive test alone does not always mean you have a corn allergy. This is general information, not medical advice; discuss your results with a healthcare professional.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the corn, cultivated allergy test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to avoid corn before the test?
No. Avoidance is not required for a blood test, and eating corn beforehand will not change the result.
Can this test tell me if I have a corn allergy?
It can show whether you have antibodies to corn, but only a clinician can diagnose an allergy after considering your symptoms and history.
What if my result is positive but I have no symptoms?
A positive result without symptoms may be a false positive or a sensitivity. Your clinician can help decide what it means.
How long does it take to get results?
Typical turnaround is 1–3 business days after the sample reaches the lab.