What's this test for?

This test is ideal if you're experiencing digestive discomfort, bloating, skin issues, or other symptoms you suspect might be related to drinking cow's milk or eating dairy products. It measures your body's IgG4 antibody response to cow's milk proteins, which some people use as one piece of information when exploring possible food sensitivities. It's often used alongside other testing or an elimination approach to help narrow down dietary triggers.

What's included in this test?

This test measures IgG4 antibodies specific to cow's milk proteins, giving you a single, focused data point about your immune response to this particular food. Because it targets one specific allergen, it's a simpler test than a broad food panel, which makes it useful when you already suspect dairy is a concern rather than casting a wide net.

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 IgG4 level means for cow's milk. If your level comes back elevated, a common next step is trying a short trial period of reducing or removing cow's milk products and watching for symptom changes, then retesting later to see if levels shift. You can download a standard lab report from your account at any time, and you can track this result over time using the trends feature if you retest in the future.

How can I naturally support digestive comfort with dairy?

If you're cutting back on cow's milk, try lactose-free dairy alternatives or plant-based milks like oat, almond, or soy to see if symptoms improve. Adding probiotic-rich foods such as yogurt with live cultures (if tolerated) or fermented foods like kimchi and sauerkraut can support gut health while you experiment. Keeping a simple food and symptom journal helps you notice patterns before and after making changes. Small, gradual changes are usually easier to stick with and easier to evaluate than eliminating everything at once.

When will I get my results?

Results are typically ready within about 7 days of your lab visit. Once processed, they'll be uploaded directly to your account, and you'll be able to view and download the full report from there.

Who should consider this test?

This test is a good fit for people who notice recurring symptoms like bloating, stomach cramps, skin rashes, or fatigue after consuming milk or dairy products and want more information before making dietary changes. It can also be useful for people already working through an elimination diet who want an additional data point about cow's milk specifically.

What symptoms indicate I may need this test?

Common signs people look into this test for include bloating, gas, stomach cramps, diarrhea, skin rashes or eczema flare-ups, and unexplained fatigue that seems to follow eating dairy. If you notice these symptoms consistently after having milk, cheese, or other cow's milk products, this test can offer more insight.

What does a high IgG4 result mean?

A higher IgG4 level to cow's milk means your immune system has produced more of this specific antibody in response to milk proteins, which some people interpret as a sign of frequent or ongoing exposure. It does not automatically mean you have a true food allergy, since IgG4 antibodies are also seen in people who tolerate a food well. It's best used as one piece of the puzzle alongside your symptoms and other testing.

What causes a high IgG4 to cow's milk?

Regular or frequent consumption of cow's milk and dairy products is the most common reason for a higher IgG4 level, since your immune system produces this antibody in response to repeated exposure. It can also reflect your body's normal, ongoing response to a food that's simply a regular part of your diet, rather than a signal of intolerance. Individual immune response can vary quite a bit from person to person.

How often should I retest?

If you make changes to your diet based on this result, many people choose to retest after about 8-12 weeks to see if levels have shifted. If you haven't changed anything, there's usually no need to retest frequently since antibody levels tend to stay fairly stable without a change in exposure. Use the trends feature in your account to easily compare results side by side over time.

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.

Milk (Cow) IgG4 Test - Dairy Sensitivity 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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