Test library
Flax Allergy Test
The Flaxseed Allergy Test measures IgE antibodies against flaxseed, also called linseed. It helps assess whether sneezing, hives, or digestive symptoms are linked to flax in foods, supplements, or other products.
Order Flaxseed 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 Flaxseed Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The Flaxseed Allergy Test uses a blood sample to measure immunoglobulin E antibodies against flaxseed, also known as linseed. Flax appears in cereals, baked goods, and dietary supplements, so exposure can be easy to miss. The test shows whether sensitization to flax is present and is interpreted with a symptom history.
What this test measures
Flaxseed comes from the flax plant and is used in many foods and supplements. Its proteins can trigger allergic reactions in some people, with symptoms that may include hives, itching, nasal congestion, or digestive upset. Because flax is added to many products, reactions can occur unexpectedly.
This test measures allergen-specific IgE in serum with a laboratory immunoassay. One blood draw provides the sample, and the laboratory reports the antibody level with a reactivity class. Because flax proteins can overlap with other seed and grain allergens, results are often reviewed with related tests.
A positive result indicates sensitization, not a confirmed food allergy. Whether symptoms occur depends on exposure and individual sensitivity. A qualified healthcare provider interprets the result with the person's history and can advise on next steps. A provider can help decide what to do next.
- Flaxseed (linseed) specific IgE
- Total serum IgE
- Quantitative allergen-specific IgE level
- IgE reactivity class for flaxseed
- Cross-reactive seed storage proteins
- Related linseed oil protein allergens
Why people order this test
- Investigate reactions after eating flax or flax-containing foods
- Assess sensitivity to flax in supplements or baked goods
- Compare reactivity across seed and grain allergens
- Support an allergy workup with objective data
- Follow up on unexplained hives or digestive symptoms
- Provide context before discussing dietary changes with a provider
How to prepare
No fasting is required for this blood test. A sample is collected from a vein, usually at the arm. Tell the ordering provider about any foods or supplements that may have triggered symptoms.
Understanding your results
Results are generally available within one to three business days. The report shows the specific IgE level and reactivity class for flaxseed. An elevated value suggests sensitization, and a healthcare provider explains what it means in context.
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Frequently Asked Questions
What is flaxseed?
Flaxseed, also called linseed, is the seed of the flax plant. It is used in foods, baked goods, and dietary supplements.
How is the test performed?
A small blood sample is drawn from a vein and analyzed for IgE antibodies that react to flaxseed proteins.
Do I need to fast?
No fasting is required unless the test is combined with others that call for it.
Can flaxseed allergy be confused with other seed allergies?
Yes. Flax proteins can overlap with other seed allergens, so results are often reviewed together with related tests.
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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