Test library
Chestnut Allergy Blood Test
A chestnut allergy test uses a blood sample to measure IgE antibodies against chestnut proteins. It helps explain reactions such as itching, hives, swelling, or digestive symptoms after eating chestnuts or foods that contain them.
Order Chestnut 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 Chestnut Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The chestnut allergy test measures immunoglobulin E antibodies directed at proteins in sweet chestnuts. It is ordered when someone has symptoms after eating chestnuts, or as part of a broader nut or food allergy panel. The result shows whether sensitization is present, and a qualified healthcare provider interprets it together with the person's history.
What this test measures
Chestnuts are tree nuts, though they differ from peanuts and many other nuts in their protein makeup. Reactions can range from oral itching to hives, swelling, or digestive upset, and in some people more serious symptoms. Because chestnuts are used in stuffing, soups, and desserts, exposure can be easy to overlook.
The test measures allergen-specific IgE in serum using a laboratory immunoassay. A single blood sample is collected, and the report provides the chestnut-specific IgE level along with a reactivity class. Chestnut allergens include Cas s 1, Cas s 5, and Cas s 8, and some of them cross-react with birch pollen and latex, which can influence how results are interpreted.
A positive result indicates sensitization rather than a confirmed allergy. Some people have antibodies without noticeable symptoms, and others react only under certain conditions. Clinicians review the result with a symptom history and any related pollen or latex tests before offering guidance on avoidance and evaluation.
- Chestnut-specific IgE antibodies
- Total serum IgE
- Quantitative allergen-specific IgE level
- IgE reactivity class for chestnut
- Chestnut allergen component Cas s 1
- Chestnut allergen component Cas s 5
- Chestnut allergen component Cas s 8
- Cross-reactive birch pollen allergen Bet v 1
Why people order this test
- Investigate reactions after eating chestnuts or chestnut containing foods
- Support evaluation of a suspected tree nut allergy
- Clarify a food allergy finding within a broader panel
- Assess cross-reactivity with birch pollen or latex
- Provide objective information before discussing avoidance
- Follow up on hives or digestive symptoms of unclear cause
How to prepare
No fasting is needed for this blood test. A blood sample is drawn from a vein, typically at the arm. Follow any instructions from the laboratory, especially if the test is combined with other allergy tests.
Understanding your results
Results are usually available within one to three business days. The report shows the chestnut-specific IgE level and a reactivity class. An elevated value suggests sensitization, and only a qualified healthcare provider can interpret it in the context of symptoms and exposure.
Chestnut Allergy Blood Test by state
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California
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Colorado
Chestnut Allergy Blood Test across Colorado.
Connecticut
Chestnut Allergy Blood Test across Connecticut.
Delaware
Chestnut Allergy Blood Test across Delaware.
Florida
Chestnut Allergy Blood Test across Florida.
Georgia
Chestnut Allergy Blood Test across Georgia.
Hawaii
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Idaho
Chestnut Allergy Blood Test across Idaho.
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Frequently Asked Questions
Is a chestnut a tree nut?
Yes. Sweet chestnuts are tree nuts. They differ in protein makeup from peanuts and many other nuts, so reactions and cross-reactivity patterns can vary.
What symptoms can a chestnut allergy cause?
Symptoms may include itching or tingling in the mouth, hives, swelling, abdominal discomfort, or, in some cases, breathing difficulty. Severe or worsening symptoms need prompt medical attention.
Can chestnut allergy be linked to other allergies?
Yes. Some chestnut proteins cross-react with birch pollen and latex, so a healthcare provider may review related tests to understand the full pattern.
How is the sample collected?
A small blood sample is drawn from a vein, and the serum is tested for IgE antibodies that react to chestnut.
Do I need to fast?
No. Fasting is not required for this test unless it is bundled with another panel that calls for it.
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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