A patient seated in the chair before a blood draw
In person

Rye (Grain) Allergy (IgE)

Measures IgE to rye, a sign of sensitization, from one draw.

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  • 2,000+ lab locations. Find one near you
  • Nothing due at the lab. FSA / HSA accepted
  • Ordered by a licensed clinician

At a glance

Collection
Blood draw
A standard blood draw at the lab.
Preparation
None
Nothing to do ahead of time. Water is fine.
Results
3 to 5 days
Typical turnaround after your visit.
Where
2,000+ lab locations
Nationwide, with nothing due at the lab.

About this test

This test checks your blood for IgE antibodies to rye, a grain. People often check it after a reaction to bread, cereal, or baked goods, or before seeing an allergist. A positive result shows sensitization, which is not the same as an allergy. No fasting or other prep is needed.

For adults 18 and older. Test availability varies by lab location.

Who should take this test?

For adults who want to check IgE to rye, often after a reaction to bread, cereal, or baked goods, and who plan to review the result with an allergist or other healthcare provider.

Ask about this test

Not sure this is the right test?

AI-generated. For information only, not medical advice. Call 911 for an emergency.

What does this test measure?

The result shows whether your immune system has made IgE to rye. An allergist reads it with your history to understand what that sensitization may mean.

Rye-specific IgE (f5)
Specific IgE is an antibody the immune system can make against a single food. This marker measures IgE that recognizes rye, a grain. A level above the lab’s reference range shows sensitization, which an allergist reads with your history.
Why it’s measured: Helps an allergist understand possible sensitization to rye.

How it works

  1. Step 1

    Order online

    Check out here. A licensed clinician in your state reviews your order and sends it to the lab.

  2. Step 2

    Visit a lab

    Bring a photo ID to any of 2,000+ lab locations. No fasting needed, and nothing is due at the lab.

  3. Step 3

    Get your results

    Results post to your account, usually in 3 to 5 days, each number next to the lab’s reference range.

Find a lab near you

Choose from 2,000+ lab locations nationwide. Your order works at any of them.

What your results tell you

Your result is reported as an IgE level in kU/L and compared with the lab’s reference range. A level above the range shows sensitization.

  • Your number next to the lab’s reference range
  • Explained in plain language
  • A licensed clinician reviews your order and, if appropriate, orders the test.
  • A lab report you can download and share

Share this result with an allergist or other healthcare provider, who reads it with your history and decides on next steps.

Clinical-grade testing, from the comfort of home.

From the lab to your report, every step of our process meets the gold standard in medical testing.

  • CLIA-certified labs

    Every lab we partner with is certified under the Clinical Laboratory Improvement Amendments, meeting both state and federal standards with regular independent inspections.

  • We protect your health data

    We protect your health data with encryption and do not sell it. Some results must be reported to public health authorities by law. See our Privacy Notice.

  • Rigorous quality assurance

    All partner labs run regular internal quality checks, participate in proficiency testing, and comply with federal and state lab regulations.

  • Clinician-reviewed reports

    Results are reviewed by an independent, licensed clinician.

Questions

Common questions.

Anything else, our care team answers by phone, text, or email.

No. This test measures IgE to rye, which is about allergic sensitization. Celiac disease is a different immune condition that is checked with its own antibody tests.

A negative IgE result does not tell you anything about celiac disease, and a positive one does not mean you have it. A healthcare provider can explain which test fits your symptoms.

It does not tell you whether you will react to rye, or how strongly. IgE shows sensitization, and many sensitized people have no symptoms. A negative result does not clear an allergy either.

Decisions about eating rye belong with an allergist or other healthcare provider who knows your history.

No. This blood test is not for urgent reactions. Trouble breathing, swelling of the face or throat, or fainting after eating any food needs emergency care, so call 911 right away. If you have a prescribed epinephrine auto-⁠injector, use it as directed.

Once you are well, an allergist or other healthcare provider can help you decide whether testing fits and what comes next.

Lab tests are informational and don’t diagnose conditions on their own. Available to adults 18 and older; test availability varies by lab location. A licensed clinician reviews your order and, if appropriate, orders the test. All testing is performed at CLIA-certified laboratories. Not for emergencies: if you think you may be having a medical emergency, call 911.