Allergy, Egg Yolk Test
About Allergy, Egg Yolk Test
| Field | Value |
|---|---|
| Also Known As | Egg Yolk IgE Test, Egg Yolk Specific IgE Test, Egg Yolk Allergy Test |
| Sample Type | Serum (venous blood) |
| Fasting Required | No fasting required |
| Report Time | 3 Days |
| Recommended For | All ages and genders; particularly those with suspected egg-related allergic symptoms |
| Price | Starting at ₹1,300 |
What Is an Allergy, Egg Yolk Test?
The allergy, egg yolk test is a blood test that measures specific IgE (immunoglobulin E) antibodies produced by the immune system in response to egg yolk proteins. It is prescribed when a doctor suspects a patient may have an allergic reaction triggered by egg yolk. Also known as the egg yolk IgE test, egg yolk specific IgE test, or egg yolk allergy test, it requires a small blood sample drawn from a vein.
What Does an Allergy, Egg Yolk Test Measure?
This test measures one specific marker in your blood. The table below explains what it represents:
| Parameter | What It Shows |
|---|---|
| Egg yolk-specific IgE antibodies | The level of Immunoglobulin E (IgE) antibodies your immune system has produced against egg yolk proteins |
When someone has an egg yolk allergy, the immune system mistakenly treats yolk proteins as harmful. The test is performed using a method called fluorescence enzyme immunoassay (FEIA), a technology that detects and quantifies these specific antibodies in your serum.
Why Is an Allergy, Egg Yolk Test Done?
This test is ordered when a doctor suspects that a patient's symptoms are caused by an immune reaction to egg yolk. It helps confirm or rule out egg yolk sensitisation.
Common Symptoms That May Require This Test
The following symptoms may prompt a doctor to request an allergy, egg yolk test:
- Hives (raised, itchy welts on the skin) after eating eggs
- Swelling of the lips, face, or area around the eyes
- Itching of the skin or mouth
- Nausea or vomiting following egg consumption
- Diarrhoea or abdominal discomfort
- Breathing difficulties after egg exposure
- Repeated allergic reactions with no identified cause
Conditions This Test Can Help Detect
This test assists in identifying a range of allergy-related conditions. These include:
- Confirmed sensitisation to egg yolk proteins
- Egg yolk allergy as the cause of a previous allergic episode or anaphylaxis (a sudden, severe allergic reaction)
- Bird-egg syndrome, where cross-reacting proteins in bird feathers and egg yolk trigger simultaneous sensitivities
- Need for immunotherapy (a treatment programme that reduces allergy sensitivity), by confirming sensitisation beforehand
How to Prepare and What to Expect
No special preparation is needed for this test. However, a few practical steps can help ensure an accurate result.
Do You Need to Fast?
No fasting is required before the allergy, egg yolk test. You can eat and drink as usual before your appointment. However, if you are having other tests on the same day, your doctor may advise fasting for those. Always follow specific instructions provided by your doctor.
Practical Tips Before Your Test
Keep the following in mind before your appointment:
- Bring a detailed clinical history including your symptoms, previous test results, and family history, as this is required for the test
- Inform your doctor about any antihistamine or corticosteroid medications you are taking, as these can suppress IgE levels and affect results
- Stay well hydrated to make blood collection easier
- Wear a short-sleeved or loose-fitting top for easy access during blood draw
- Bring details of any recent allergic reactions to share with your doctor at the time of collection
Step-by-Step Procedure
Here is what typically happens during an allergy, egg yolk test procedure:
- A trained phlebotomist will clean the skin over a vein in your arm with a disinfectant wipe.
- A small needle is gently inserted into the vein and a blood sample of approximately 3 ml is drawn into a serum separator tube.
- The needle is removed and a small cotton pad is placed over the puncture site to stop any bleeding.
- The collected sample is labelled and stored at a refrigerated temperature (2 to 8° C) for safe transport.
- The sample is sent to the laboratory, where it is analysed using the FEIA method to measure specific IgE antibody levels against egg yolk proteins.
- Your report is prepared and delivered within 3 days.
Factors That Can Affect Accuracy
Several factors can influence the reliability of your result:
- Use of antihistamines or corticosteroids before the test
- Very high total serum IgE levels can cause false-positive readings
- Time elapsed since your last exposure to egg yolk
- Pre-existing conditions such as atopic dermatitis (eczema), which may raise baseline IgE levels
Understanding Your Allergy, Egg Yolk Test Results
Always discuss your results with your doctor, who will interpret them alongside your symptoms and medical history. The table below shows what each range represents:
| Class | IgE Level (kU/L) | Interpretation |
|---|---|---|
| 0 | <0.10 | Negative |
| 0/1 | 0.10-0.34 | Borderline/equivocal |
| 1 | 0.35-0.69 | Equivocal |
| 2 | 0.70-3.49 | Positive |
| 3 | 3.50-17.4 | Positive |
| 4 | 17.5-49.9 | Strongly positive |
| 5 | 50.0-99.9 | Strongly positive |
| 6 | > or =100 | Strongly positive |
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
Results During Special Conditions
Certain health conditions can alter how results are interpreted:
- Patients with very high total IgE levels may receive false-positive readings due to non-specific antibody binding.
- Patients with atopic dermatitis (eczema) or other food allergies may also show false-positive reactions.
- People who are sensitised to bird feathers or dander may test positive for egg yolk allergy due to cross-reactivity through alpha-livetin, a condition known as bird-egg syndrome.
How to Maintain Healthy Levels
If you have confirmed egg yolk sensitisation, the following general steps may help reduce exposure:
- Avoid foods that contain egg yolk, including mayonnaise, custard, pasta, ice cream, and many baked goods
- Read food labels carefully, as egg may be listed under different names in processed foods
- Consult an allergist for personalised dietary guidance and to discuss whether an emergency action plan is appropriate for you
Lupin Diagnostics Allergy, Egg Yolk Test Price and Home Collection
The allergy, egg yolk test cost at Lupin Diagnostics starts from ₹1,300, with home sample collection offered across multiple cities in India. The table below provides indicative city-wise pricing:
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 1300 |
| CHENNAI | 1300 |
| HYDERABAD | 1300 |
| KOLKATA | 1300 |
| NAVI MUMBAI | 1300 |
| PUNE | 1300 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Follow these steps for allergy, egg yolk test online booking:
- Select the test on the Lupin Diagnostics website.
- Choose your city and preferred time slot.
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Home Collection
Lupin Diagnostics offers allergy, egg yolk test home collection across cities, so you can have your sample collected from the comfort of your home. All samples are processed in NABL-accredited laboratories by trained technologists. Your digital report is shared securely once ready.
Frequently Asked Questions
The allergy, egg yolk test is a blood test that detects specific IgE antibodies against proteins found in egg yolk. It helps confirm whether your immune system reacts to egg yolk and can identify the allergen responsible for your symptoms. A small blood sample is drawn from a vein and tested in the laboratory.
The two parts of an egg contain different proteins, and it is possible to be allergic to one and not the other. Egg white contains the most common allergenic proteins, but egg yolk proteins (particularly alpha-livetin) also cause significant allergic reactions in many individuals. Your doctor may test for both to identify the exact source of your symptoms.
A positive result indicates that your immune system has produced IgE antibodies against egg yolk proteins, suggesting sensitisation. However, a positive test result alone does not confirm a clinical allergy. Your doctor will assess the result alongside your symptoms and history before reaching a conclusion.
At Lupin Diagnostics, your report is typically ready within 3 days of sample collection. You will receive your digital report via email or WhatsApp.
Bird-egg syndrome is a condition where a person develops respiratory symptoms (such as a runny nose or asthma) when exposed to birds and also experiences digestive symptoms when eating egg yolk. Both reactions are linked to the same protein, alpha-livetin, which is found in both bird feathers and egg yolk.
No fasting is required. You can eat and drink normally on the day of your test. However, do inform the phlebotomist or your doctor about any allergy medications or antihistamines you are taking, as these can affect your results.
A positive result should be discussed with an allergist who can guide you on dietary changes, allergy management, and whether further testing or immunotherapy is appropriate. Do not make significant dietary changes without professional guidance.
Allergy, Egg Yolk Test: Booking, Price, and Results
