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Egg yolk IgG food sensitivity test for digestive discomfort and diet troubleshooting

Egg Yolk IgG Food Sensitivity Blood Test

Egg Yolk (f75) IgG

  • Check egg yolk sensitivity reactions
  • Screen digestive discomfort after eggs
  • Identify possible dietary trigger foods
$118
First results as soon as overnight*

All results normal? Get your money back. First-time customers only. File a support ticket titled “Money Back Guarantee” with your order number within 15 days of receiving your results. STD, Sickle Cell, and gift orders aren’t eligible. Full terms apply. guarantee
No questions asked refunds
LegitScript certified

Prescription & all lab fees included

Go directly to the lab, no extra fees

Doctor's guidance included

Easy to understand results

Fast & convenient

Lab visit as quick as 10 mins in & out

Prescription & all lab fees included

Go directly to the lab, no extra fees

Doctor's guidance included

Easy to understand results

Fast & convenient

Lab visit as quick as 10 mins in & out

All results normal? Get your money back. First-time customers only. File a support ticket titled “Money Back Guarantee” with your order number within 15 days of receiving your results. STD, Sickle Cell, and gift orders aren’t eligible. Full terms apply. guarantee
No questions asked refunds
LegitScript certified

What's this test for?

This test is ideal if you're experiencing digestive upset, bloating, skin reactions, or other unexplained symptoms after eating eggs or egg-containing foods. It measures your immune system's IgG antibody response to egg yolk protein, which can help you figure out if egg yolk might be a trigger for your symptoms. It's a helpful tool if you're trying to narrow down foods that may be causing you ongoing discomfort.

How should I prepare for this test?

How can I naturally support digestion if I have an egg sensitivity? Focus on easily digestible whole foods like cooked vegetables, lean proteins, and bone broth while you avoid egg yolk. Adding probiotic-rich foods like yogurt or kefir (if tolerated) and staying well hydrated can help support your gut while it recovers. Some people also find ginger tea or peppermint helpful for calming digestive discomfort during an elimination period.

What's included in this test?

This test measures IgG antibodies specifically targeted to egg yolk protein. IgG antibodies reflect a slower, delayed immune response, which is different from the immediate allergic reaction some people have to foods, so this test is useful for spotting sensitivities that cause symptoms hours or days after eating.

What happens after I get my results?
Your results will show up in your account along with an explanation of what a normal versus elevated IgG level means for egg yolk. If your level is elevated, a simple next step is to try removing egg yolk from your diet for a few weeks and see if your symptoms improve, then reintroduce it slowly to confirm the connection. Your standard lab report is downloadable anytime from your account, and you can track your levels over time using the trends feature if you retest later. If you notice severe reactions like swelling or trouble breathing after eating eggs, seek medical care right away.
When will I get my results?
Results are typically ready within about 7 days of your sample being received at the lab. You'll get a notification once your results are posted to your account, so there's no need to call or follow up.
Who should consider this test?
This test is a good fit for anyone who suspects eggs might be behind their digestive issues, skin flare-ups, headaches, or fatigue, especially if these symptoms show up hours after eating rather than immediately. It's also useful for people doing an elimination diet who want lab-based confirmation before permanently cutting out eggs. If you've already noticed a pattern between eating eggs and feeling unwell, this test can help clarify whether egg yolk specifically is the culprit.
What symptoms indicate I may need this test?
Common signs include bloating, stomach cramps, diarrhea or constipation, skin issues like eczema or hives, joint pain, brain fog, or fatigue that seems to follow meals containing eggs. Because IgG reactions are delayed, symptoms might not show up until hours or even a day or two after eating. If you keep a food and symptom journal and notice eggs coming up repeatedly, this test can help confirm your suspicion.
What does high egg yolk IgG mean?
A high result means your immune system has built up a noticeable antibody response to egg yolk protein, which some people associate with sensitivity-related symptoms like bloating or skin irritation. It doesn't mean you have a dangerous allergy, but it may be worth reducing egg yolk in your diet for a few weeks to see if you feel better. Pay attention to how your body responds when you reintroduce it later.
What causes a high or low egg yolk IgG result?
Higher levels are often linked to how frequently and how much egg yolk you eat, since regular exposure can lead your immune system to build up more antibodies over time. Your individual gut health, immune sensitivity, and genetics also play a role in how strongly your body reacts. Low levels simply mean your immune system isn't showing much of a response to egg yolk protein at this time.
How often should I retest?
If you make dietary changes based on your results, retesting after 2-3 months can help you see whether your antibody levels have changed. Otherwise, testing once every 6-12 months is reasonable if you're still investigating food-related symptoms. Retesting sooner isn't usually necessary unless your symptoms change significantly.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
  3. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
  4. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
  5. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
  6. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.
How do I know which test to get?
In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at [email protected], and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at [email protected]. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Only HSA & FSA is accepted.

Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email [email protected].
Can I cancel my order?
Yes.

We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email [email protected].

You can read more about our cancellation policy here.
How can I find a lab location near me?
During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.

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Demo results
Egg Yolk IgG Antibody 2.8 kU/L
Demo results
Not Detected Elevated
2.8 kU/L

What this means

This result shows an elevated IgG antibody level to egg yolk protein, suggesting a possible food sensitivity. This isn't a true allergy, but some people notice fewer symptoms like bloating or skin irritation when they cut back on egg yolk.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More advanced tests may take longer due to complexity.
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Egg Yolk IgG Food Sensitivity Blood Test

  • Check egg yolk sensitivity reactions
  • Screen digestive discomfort after eggs
  • Identify possible dietary trigger foods
$118
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.
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For informational purposes only. Not medical advice.