Quick Facts
- Sample: Blood serum (0.3–0.5 mL)
- Fasting: Not required
- Turn-around time: 2-5 business days. May take longer based on weather, holiday, or lab delays.
Benefits
- Pain-free alternative to skin prick testing with no risk of allergic reaction
- Fast results available within 2-5 business days at 4,500+ nationwide locations
- No appointment needed — walk into any participating lab when convenient
- Confidential testing without requiring physician referral or insurance
- Cross-reactivity detection helps identify related fruit allergies (cherry, plum, apricot)
- Quantitative results provide specific IgE antibody levels for precise diagnosis
Who Is This Test For?
- Individuals experiencing oral itching or tingling after eating peaches
- People with unexplained hives or skin reactions following peach consumption
- Those with suspected oral allergy syndrome related to pollen sensitivity
- Individuals planning allergy immunotherapy who need confirmed diagnosis
- People wanting to rule out peach allergy before dietary changes
- Anyone with family history of fruit or food allergies
How It Works – Just 3 Steps
- Order online and visit any participating lab location nationwide
- Quick blood draw takes just minutes with minimal discomfort
- Receive secure results within 2-5 business days via online portal.
FAQ
What does this test measure? It measures specific IgE antibodies that react to peach proteins (Pru p 1, Pru p 3, Pru p 7) in your blood.
Is this test accurate? Yes, Fluorescence Enzyme Immunoassay (FEIA) technology provides high sensitivity and specificity for peach allergen detection.
Can I eat peaches if my test is negative? A negative result suggests no peach allergy, but consult your doctor if symptoms persist.
What if I'm allergic to other fruits? This test specifically detects peach proteins but may indicate cross-reactivity with related fruits like cherries or plums.
Do I need to stop taking antihistamines? No medication adjustments are needed for this blood test, unlike skin prick testing.
How soon can I get tested after exposure? You can test immediately - blood tests don't require waiting periods after allergic reactions.
More Details
What is the purpose of this test?
This test measures specific Immunoglobulin E (IgE) antibodies in your blood that react to peach allergens (Prunus persica proteins). By detecting these antibodies, the test confirms whether you have an allergic sensitivity to peaches and helps identify which specific peach proteins trigger your immune response.
The test uses advanced Fluorescence Enzyme Immunoassay (FEIA) technology to detect sensitization to heat-labile proteins like Pru p 1 and heat-stable proteins such as Pru p 3 and Pru p 7, which can cause reactions ranging from mild oral allergy syndrome to severe anaphylaxis.
Who would benefit from this test?
Anyone experiencing allergic symptoms after peach exposure should consider this test. It's particularly valuable for individuals with suspected oral allergy syndrome, those planning immunotherapy treatment, or people wanting convenient allergy screening without physician referrals.
The test is ideal for individuals who cannot undergo skin prick testing due to severe eczema, medication use, or risk of anaphylaxis. It's also beneficial for monitoring allergic sensitizations during ongoing allergy management.
When should I order a Peach Allergy IgE Blood Test?
Order this test if you experience symptoms within minutes to hours after eating peaches, including tingling around the mouth, hives, swelling, nausea, congestion, or breathing difficulties. Also consider testing if you have cypress pollen allergies, as cross-reactivity may occur.
Severe symptoms requiring immediate testing include rapid heart rate, throat swelling, low blood pressure, or loss of consciousness - these may indicate anaphylaxis and require emergency medical attention alongside diagnostic testing.
How do I interpret the results?
< 0.10 kU/L
- Negative – No detectable allergy
- Safe to consume peaches
0.10 – 0.34 kU/L
- Class 1 – Very low sensitization
- Discuss with doctor; may tolerate cooked peaches
0.35 – 0.69 kU/L
- Class 2 – Low sensitization
- Avoid fresh peaches; consider allergy consultation
0.70 – 3.49 kU/L
- Class 3 – Moderate sensitization
- Strict peach avoidance; carry antihistamines
3.50 – 17.49 kU/L
- Class 4 – High sensitization
- Complete avoidance; consider epinephrine prescription
> 17.50 kU/L
- Class 5-6 – Very high sensitization
- Strict avoidance; emergency action plan required
Higher IgE levels generally correlate with increased risk of severe allergic reactions, but individual responses can vary significantly.
Disclaimer: Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.
Pre-test preparation
No special preparation is required for this blood test. You don't need to fast, stop medications, or avoid peaches before testing. The test requires a simple blood draw following standard protocols, with serum separated and analyzed using FEIA technology.
Unlike skin prick tests, you can continue taking antihistamines or other allergy medications without affecting results accuracy.
How often should I get tested?
- Initial diagnosis: One-time test unless symptoms change
- Monitoring during immunotherapy: Every 6–12 months as directed
- Children with food allergies: Every 1–2 years to assess if outgrowing allergy
- Adults with stable allergies: Only if new symptoms develop
- After severe reactions: Retest if considering food challenges
Why early detection matters
Early peach allergy detection prevents severe allergic reactions and reduces emergency healthcare visits. Approximately 2-5% of adults in Europe and North America have food allergies, with fruit allergies increasingly recognized as oral allergy syndrome triggers (PMC 2020).
Identifying specific peach protein sensitivities enables targeted avoidance strategies and appropriate emergency preparedness. Early diagnosis also facilitates timely allergen immunotherapy consideration, potentially reducing long-term allergy severity and improving quality of life.
Related tests you may consider
Apple Allergy IgE Blood Test - Measures the amount of allergen-specific IgE antibodies in the blood to detect an allergy to apples.
Tree Nut and Peanut Allergy IgE Blood Test - Measures the IgE antibody levels in the blood to screen for an allergy to certain tree nuts and peanuts.
IgE Food Allergy Advanced Test, Serum - Mosaic Diagnostics Test Kit - Checks for allergic reactions to 92 common foods by measuring IgE antibodies in the blood, helping identify foods that may cause symptoms like rashes, stomach issues, or trouble breathing.
