5 Grain Allergy Test
This page explains the 5 grain allergy test, what it measures, and how to arrange it. The 5 Grain Allergy Test is a blood test that checks for allergic antibodies to five common grains: wheat, corn, rice, oat, and barley. It is ordered when a person has symptoms such as hives, digestive upset, or breathing problems after eating grains, and the cause is unclear.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $159
- Referral
- Not required
The 5 Grain Allergy Test is a blood test that checks for allergic antibodies to five common grains: wheat, corn, rice, oat, and barley. It is ordered when a person has symptoms such as hives, digestive upset, or breathing problems after eating grains, and the cause is unclear.
What it measures
- Wheat-specific IgE — Antibodies that may indicate an allergy to wheat proteins.
- Corn-specific IgE — Antibodies that may indicate an allergy to corn.
- Rice-specific IgE — Antibodies that may indicate an allergy to rice.
- Oat-specific IgE — Antibodies that may indicate an allergy to oats.
- Barley-specific IgE — Antibodies that may indicate an allergy to barley.
Who it is for
This test is typically ordered by primary care providers or allergists for people who have unexplained allergy symptoms after eating grains. It is not a routine screening test.
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 level for each grain, often from negative to strongly positive. A clinician interprets these levels along with your symptoms and history; a positive result alone does not always mean you have an allergy. This is general information, not medical advice.
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.
Frequently asked questions
Do I need to stop eating grains before the test?
No. Avoiding grains before the test is not required and may not change the results.
What does a positive result mean?
It means your blood has antibodies to that grain. Whether it causes an actual allergy depends on your symptoms, so your clinician will review the full picture.
Can this test diagnose celiac disease?
No. Celiac disease involves different tests. This test looks only for immediate allergy antibodies.
How long do results take?
Results are usually ready in 1 to 3 business days.