What's this test for?

This test is ideal if you're experiencing ongoing digestive discomfort, bloating, gas, or other unexplained symptoms that seem related to what you eat. It helps identify which specific foods might be triggering immune responses in your body, even if you don't have classic allergies. Many people use this test when they suspect certain foods are causing problems but can't pinpoint which ones on their own.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining which foods showed elevated IgG4 antibody responses and what that means for your symptoms. These notes include personalized recommendations like dietary modifications, elimination strategies, or foods to avoid temporarily while monitoring your response. You'll also get the standard lab report and can track your antibody levels over time using our trends feature, which is especially helpful as you adjust your diet and retest.

What's included in this test?

This panel measures IgG4 antibody responses to Broccoli, Grape, Green Bean, Onion, Pineapple, Shrimp, Sugar Beet Seed, Tuna, and Turkey. These foods represent a diverse mix of common ingredients that can trigger delayed sensitivity reactions, which are different from immediate allergic responses. By measuring your IgG4 levels to each food, the test reveals which items may be contributing to chronic digestive issues, inflammation, or other persistent symptoms that develop hours or days after eating.

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 blood draw. Avoid starting any elimination diets or drastically changing your eating habits beforehand, as your body needs recent exposure to these foods to produce detectable antibody levels. No fasting is required, and you can take your regular medications unless otherwise directed by your healthcare provider.

When will I get my results?

Most food sensitivity panel results are available within 5-7 business days after the lab receives your sample. You'll be notified by email as soon as your results are ready to view in your secure online account. Complex antibody testing takes a bit longer than standard blood work, but the detailed insights are worth the short wait.

Who should consider getting this test?

This test is particularly useful for people with chronic digestive issues like bloating, gas, diarrhea, or constipation that haven't been explained by other tests. It's also helpful for those experiencing skin problems, headaches, fatigue, or joint pain that might be food-related. Anyone who suspects their symptoms worsen after eating but can't identify specific trigger foods would benefit from this testing.

What symptoms indicate I may need this test?

Common signs include persistent bloating or gas after meals, irregular bowel movements, stomach cramping, or a feeling of general digestive discomfort. You might also experience brain fog, fatigue, headaches, skin issues like eczema or rashes, or joint pain that seems worse on certain days. If your symptoms are chronic but not severe enough to be a true allergy, food sensitivities could be the underlying cause.

What's the difference between food allergies and food sensitivities?

Food allergies involve IgE antibodies and cause immediate, often severe reactions like hives, swelling, or difficulty breathing within minutes to hours. Food sensitivities involve IgG4 antibodies and trigger delayed reactions that can occur hours or even days after eating, making them harder to identify. Sensitivities typically cause less dramatic but chronic symptoms like digestive issues, headaches, fatigue, and inflammation rather than life-threatening reactions.

What should I do if my results show elevated IgG4 levels?

Start by eliminating the high-reactive foods from your diet for 4-6 weeks while keeping a symptom journal to track improvements. After this elimination period, you can try reintroducing foods one at a time to see which ones truly affect you. Work with a nutritionist or dietitian to ensure you're maintaining balanced nutrition while avoiding trigger foods, and consider retesting after several months to see if antibody levels have decreased.

How can I support my digestive system while avoiding trigger foods?

Focus on eating a variety of whole, unprocessed foods that didn't show reactions on your test to ensure nutritional diversity. Support gut healing with probiotic-rich foods like yogurt, kefir, sauerkraut, and kimchi, and include plenty of fiber from vegetables and whole grains. Stay well-hydrated, manage stress through relaxation techniques, and consider digestive enzymes or L-glutamine supplements to help repair the gut lining while you work on identifying and eliminating trigger foods.

How often should I retest my food sensitivities?

After eliminating trigger foods and allowing your gut to heal, consider retesting in 6-12 months to see if your IgG4 antibody levels have decreased. Some people find their sensitivities improve over time with gut healing and may be able to reintroduce certain foods. If you're still experiencing symptoms despite dietary changes, retesting after 3-6 months can help determine if you've successfully identified all trigger foods or if additional testing is needed.

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 & Discomfort 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 III

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