Quick Facts
- Sample: Blood
- Fasting: No special preparation is required
- Turnaround: 3-5 business days. May take longer based on weather, holiday, or lab delays
What's Included
This panel measures IgE antibody levels against two specific egg white proteins (components), helping assess potential sensitization to hen's egg.
- F232-IgE Ovalbumin: the most prevalent egg white protein; breaks down at high temperatures.
- F233-IgE Ovomucoid: an egg white protein that is heat-stable and resistant to acid.
Benefits
- Measures IgE antibodies to two distinct egg white proteins.
- Distinguishes reactivity to heat-labile and heat-stable egg proteins.
- Uses a simple blood draw with no special preparation.
- Provides component-level detail beyond a single whole-egg result.
- Offers a convenient way to check ordered biomarkers together.
Who Is This Test For?
- Individuals who have experienced symptoms after eating eggs or egg-based dishes.
- People with skin, digestive, or respiratory symptoms following egg exposure.
- Those wanting to check both major egg white proteins in one panel.
- Individuals working with a healthcare provider on a possible egg allergy.
- People who have experienced a severe reaction and want documented lab data.
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What does this panel test?
This panel measures IgE antibody levels against two proteins found in egg white: ovalbumin and ovomucoid. Together, these two component measurements are combined into a single blood test to help evaluate potential sensitization to hen's egg white proteins. The panel does not test egg yolk proteins or any other food allergens.
2. What's the difference between ovalbumin and ovomucoid?
Ovalbumin is the most abundant protein in egg white and breaks down at high cooking temperatures, so some individuals sensitized to it may tolerate well-cooked eggs. Ovomucoid, by contrast, is resistant to heat and acid, meaning sensitization to this protein is more likely to be associated with reactions to both raw and cooked eggs. Measuring both proteins separately can provide more detailed information than a single whole-egg result.
3. Who should consider this panel, and when?
Anyone who has noticed symptoms, such as hives, swelling, digestive upset, or breathing difficulty, after eating eggs or egg-containing foods may want to consider this panel. It can also be relevant for individuals who have had a reaction to an egg-based dish and want more specific information about which egg white proteins may be involved. This test does not replace a medical evaluation.
4. How does this panel differ from an individual egg allergy test?
A single whole-egg IgE test reports one overall result for egg white, while this panel separately measures IgE to ovalbumin and ovomucoid. This component-level approach can offer more specific information about which egg white proteins may be involved, rather than a single combined result. Neither approach is inherently better; they simply provide different levels of detail.
5. Do I need to fast or prepare for this test?
No special preparation is required for this test. You can go about your normal routine, including eating and drinking as usual, before your blood draw.
6. How quickly will I get results?
Results are typically available in 3 to 5 business days. This timeframe may take longer depending on weather, holidays, or other lab delays.
7. How should I interpret my results, and what if one or more are abnormal?
Each protein result (ovalbumin and ovomucoid) should be considered individually and in the context of your symptoms and medical history, not as a single combined score. A positive result reflects the presence of IgE antibodies and does not, by itself, confirm a clinical food allergy, predict reaction severity, or indicate whether egg needs to be avoided. Likewise, a negative result does not guarantee that eggs can be safely consumed. If one or both results are abnormal, review them with a qualified healthcare provider, who can help determine whether further evaluation is appropriate. Do not stop prescribed medication unless instructed by your healthcare provider.
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 test.
Cross-Reactivity
Cross-reactivity may occur when the immune system recognizes similar proteins shared across different foods or substances. This panel measures only the two egg white proteins, ovalbumin and ovomucoid, listed above. It does not test for egg yolk proteins, other food allergens, pollens, or animal-derived allergens discussed below unless specifically listed in What's Included. The examples that follow are not an exhaustive list, and they represent possible additional considerations rather than confirmed allergies. They do not mean a person will necessarily experience a clinical reaction to another item.
- Other bird eggs (turkey, duck, goose): research has identified proteins in these eggs' whites, including ovalbumin- and ovomucoid-like proteins, that may share IgE-binding similarities with hen's egg white proteins, though the degree of reactivity can vary by species.
- Poultry meat and feathers (bird-egg syndrome): some individuals sensitized to avian feathers or dander later develop reactivity to egg yolk serum albumin, a different protein from the egg white components measured here, with occasional associated reactivity to poultry meat.
If reactions to other avian eggs or bird-related proteins are a concern, discussing your history and symptoms with your healthcare provider may help determine whether related allergen testing is worth considering. This information is provided for educational context only and does not indicate that additional testing is required.
