What's this test for?

This test is ideal if you're experiencing frequent infections, sinus problems, or lung infections that keep coming back. It helps if you have unexplained allergy-like symptoms or a family history of immune system problems. It's often used to help understand why your body may have trouble fighting off certain infections.

What's included in this test?

This test measures one specific subclass of immunoglobulin G, a type of antibody your immune system uses to fight infections. Looking at this subclass on its own (rather than total IgG) can help spot immune gaps that a broader antibody count might miss.

What happens after I get my results?

Your results will show up in your account with the normal range explained next to your value, so you can see exactly where you stand. If your level falls outside the normal range, simple next steps include noting any recent infections or illnesses and considering a retest in a few months to confirm the pattern. You can download a standard lab report from your account at any time, and use the trends feature to track this value over time if you test again in the future.

How can I naturally support your immune system?

Getting enough sleep, eating a balanced diet with plenty of fruits and vegetables, and managing stress all help your immune system work well. Regular moderate exercise and staying hydrated also support healthy antibody production. Avoiding smoking and limiting alcohol can further help your body defend against infections.

When will I get my results?

Results are typically ready within about 7 days of your lab visit. Once ready, they'll be posted directly to your secure online account, where you can view and download them at your convenience.

Who should consider this test?

People who get frequent sinus infections, pneumonia, bronchitis, or other repeat infections may want to consider this test. It's also useful for those with a family history of immune deficiency or ongoing unexplained health issues tied to infections. Anyone wanting a closer look at a specific part of their antibody defenses can benefit as well.

What symptoms indicate I may need this test?

Watch for repeated sinus, ear, or lung infections, infections that take longer than usual to clear up, or frequent need for antibiotics. Chronic fatigue tied to recurring illness can also be a sign worth checking. If these patterns sound familiar, this test can offer helpful insight.

What does low Immunoglobulin G Subclass 2 mean?

A low result may mean your body isn't producing enough of this specific antibody type, which can make it harder to fight off certain bacterial infections, especially those affecting the sinuses and lungs. This doesn't always mean something serious, but it's worth tracking alongside your infection history. Simple lifestyle steps like better sleep, nutrition, and stress management can support your overall immune function while you monitor this value.

What causes high or low Immunoglobulin G Subclass 2?

Low levels can be linked to genetic factors, certain chronic illnesses, or medications that affect the immune system. High levels are less common but can occur with ongoing immune system activation, such as chronic infections or inflammation. Lifestyle factors like poor nutrition and high stress can also play a role in lower levels over time.

How often should I retest?

If your first result is outside the normal range, retesting every 3 to 6 months can help you see if the pattern is consistent or changing. If your levels are normal but you continue having frequent infections, you might retest sooner if new symptoms appear. Using the trends feature makes it easy to 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.

IgG Subclass 2 Test - Immune Deficiency Screening

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]