What's this test for?

This test is ideal if you're experiencing ongoing digestive discomfort, bloating, or unexplained symptoms that might be linked to certain foods. It helps identify which specific foods your body may be reacting to with an IgG4 immune response, even if you don't have classic allergies. Many people use this test when they suspect food sensitivities but can't pinpoint which foods are causing their symptoms.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining which foods triggered an IgG4 response and what that means for your diet and symptoms. These notes include personalized recommendations like elimination diet strategies, substitute food suggestions, or when you might consider reintroducing foods. You'll also get the standard lab report and can track your sensitivity levels over time using our trends feature to see if your food reactions change as you adjust your diet.

What's included in this test?

This panel measures IgG4 antibody levels to cashew, celery, coffee, crab, flounder, kiwi, lamb, pecan, and salmon. This panel measures your IgG4 antibody levels to nine specific foods including cashew, celery, coffee, crab, flounder, kiwi, lamb, pecan, and salmon. These foods were selected because they represent common triggers across different food groups that can cause delayed sensitivity reactions. By testing your immune response to each food, the panel helps identify which items may be contributing to your digestive discomfort, inflammation, or other unexplained symptoms.

How should I prepare for this test?

For the most accurate results, continue eating your normal diet including the foods being tested in the weeks before your test. If you've already eliminated certain foods, try to reintroduce them at least 2-4 weeks before testing so your immune system can produce detectable antibody levels. No fasting is typically required, but check with your testing location for any specific requirements.

Who should consider getting this test?

This test is ideal for people experiencing chronic digestive issues like bloating, gas, or irregular bowel movements that don't have an obvious cause. It's also helpful for those with skin issues, headaches, fatigue, or inflammation that might be food-related, or anyone who suspects they have food sensitivities but traditional allergy tests came back negative.

What symptoms indicate I may need this test?

Common symptoms include persistent bloating, stomach discomfort, irregular bowel movements, or feeling unwell after eating certain foods. You might also experience brain fog, headaches, skin issues like eczema or rashes, joint pain, or unexplained fatigue that seems connected to your diet but you can't identify specific trigger foods.

How can I manage food sensitivities naturally?

Start by eliminating identified trigger foods for 4-6 weeks to allow your body to calm down, then slowly reintroduce them one at a time to see if symptoms return. Support your gut health with probiotic-rich foods like yogurt and fermented vegetables, stay hydrated, and focus on whole, unprocessed foods. Keeping a detailed food diary can help you track symptoms and identify patterns over time.

What is IgG4 and why does it matter?

IgG4 is a type of antibody your immune system produces in response to foods you eat regularly. Unlike IgE antibodies that cause immediate allergic reactions, IgG4 antibodies are associated with delayed food sensitivities that can cause symptoms hours or even days after eating. High IgG4 levels to specific foods suggest your body may be mounting an immune response to those foods, which could contribute to chronic inflammation and various symptoms.

What does a high IgG4 result mean?

A high IgG4 level to a specific food suggests your immune system is producing more antibodies against that food, which may indicate a sensitivity or intolerance. This doesn't mean you're allergic in the traditional sense, but it suggests that food might be contributing to inflammation, digestive issues, or other symptoms. Many people find that temporarily removing high-reaction foods helps their symptoms improve.

How often should I retest my food sensitivities?

If you've eliminated trigger foods and made dietary changes, consider retesting after 6-12 months to see if your antibody levels have decreased. Food sensitivities can change over time, especially if you've healed your gut and reduced inflammation. Some people find that after avoiding a food for several months, they can eventually tolerate it again in small amounts.

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.

Food Sensitivity Test - Digestive & 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

[email protected]

Blood Test for Food Sensitivities and Digestive Issues

IgG4 Food Panel VI

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

How should I prepare for this test?

What's included in this test?

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

Blood Test for Food Sensitivities and Digestive Issues

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

1,000,000+ blood tests later, here's what our customers say

Ask Me Anything