What's this test for?

This test is ideal if you're experiencing unexplained reactions after eating foods that may contain lysozyme, such as certain processed meats, cheeses, or wine. Lysozyme is an egg-derived protein used as a preservative in some foods, and it can trigger allergic-type symptoms like hives, swelling, or digestive upset in sensitized people. If you've noticed a pattern between eating specific foods and these symptoms, this test can help identify whether lysozyme sensitization is a factor.

What happens after I get my results?

Your results will show up in your account with a clear explanation of what a positive or negative result means for lysozyme IgE. If your result is positive, a practical next step is to start reading ingredient labels closely, since lysozyme is often listed as an egg-derived preservative, and consider an elimination trial to see if symptoms improve. The full lab report is available to download directly from your account, and you can track this result alongside future tests using the trends feature to watch for changes over time. If you experience severe symptoms like difficulty breathing or swelling of the throat, seek emergency medical care right away.

What symptoms indicate I may need this test?

Common signs of lysozyme sensitization include hives, itching, swelling of the lips or face, stomach cramps, or nausea that show up shortly after eating foods containing this preservative. Some people also notice symptoms after eating foods processed with egg-white derivatives, since lysozyme comes from egg white. If these reactions happen repeatedly after similar meals, it's worth checking for sensitization.

How can I naturally support my immune response to allergens?

Reducing overall inflammation can help your body manage mild sensitivities better, so focus on a diet rich in fruits, vegetables, and omega-3 fats like those in fish or flaxseed. Staying well hydrated and getting consistent sleep also supports a balanced immune system. Some people find relief by keeping a food and symptom journal to identify and avoid triggers before reactions start.

When will I get my results?

Results for this test are typically ready within about 7 days of your lab visit. Once processed, they'll be uploaded directly to your secure online account, and you'll be notified as soon as they're available to view or download.

Who should consider this test?

This test is a good fit for anyone who suspects a food reaction tied to lysozyme, especially those who react after eating cured meats, aged cheeses, or wine where it's used as a preservative. It's also useful for people with known egg allergies who want to check for related sensitization. If you've had unexplained hives or digestive symptoms after meals, this test can offer helpful clarity.

What does a positive lysozyme IgE result mean?

A positive result means your immune system has produced antibodies against lysozyme, indicating sensitization. This doesn't automatically mean you have a full allergy — it means your body recognizes this protein and could react to it, especially if you also experience symptoms after exposure. Combining this result with your symptom history gives the clearest picture of what's going on.

What does a negative result mean?

A negative result means no significant IgE antibodies to lysozyme were detected, which makes an allergy to this specific protein unlikely. If your symptoms continue after eating suspect foods, it may be worth looking at other ingredients or preservatives in those products. Keeping track of what you eat alongside symptoms can help narrow down other possible triggers.

How often should I retest for allergen sensitization?

If your first result is negative but symptoms continue, retesting after a few months can help since sensitization levels can change over time. For those with a positive result who are actively avoiding lysozyme, retesting once a year can help track whether sensitization decreases with avoidance. Retesting sooner makes sense if new or worsening symptoms appear.

What should I do if my results are abnormal?

If you test positive, start by avoiding foods known to contain lysozyme, such as certain aged cheeses, cured meats, and some wines, and check labels carefully. Introducing one food back at a time after a period of avoidance can help you confirm which items trigger symptoms. If reactions are severe or involve breathing difficulty, treat this as an emergency and seek immediate medical care.

Getting your blood test with us is easy, private & backed by the power of science.Long story short: In the test options, use the filters or search box to narrow your choices and find the test you want. 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. 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. 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. 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. 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. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com 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 support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

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 support@privatemdlabs.com. 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 support@privatemdlabs.com.

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 support@privatemdlabs.com. 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 support@privatemdlabs.com and we'll gladly help you.

Lysozyme IgE Test - Food Preservative Allergy Check

Getting your blood test with us is easy, private & backed by the power of science.

Long story short:

In the test options, use the filters or search box to narrow your choices and find the test you want.
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.
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.
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.
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.
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.
You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!

754-799-7833

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