What's this test for?

This test is ideal if you're experiencing frequent colds, infections that seem to linger, or if you're generally concerned about how well your immune system is working. It measures your body's T and B immune cells, which are key players in fighting off viruses and other invaders. It can also be useful if you have a condition that affects your immune system or want a baseline picture of your immune health.

What's included in this test?

This test looks at your total T cells and B cells, the two main types of white blood cells that make up your adaptive immune system. T cells help destroy infected cells directly and coordinate your body's defense, while B cells produce antibodies that target specific germs. Together, these numbers give a picture of how equipped your immune system is to fight off infections.

What happens after I get my results?

Your results will show up in your online account, with each immune cell value explained alongside its normal range so you know exactly what's high, low, or on target. If something is out of range, the report offers straightforward next steps, like simple lifestyle adjustments or a suggested timeframe for retesting, and flags when a result is severe enough that you should seek medical care right away. You can download a standard lab report anytime from your account, and if you test again in the future, the trends feature lets you compare results side by side to see how your immune health changes over time.

Who should consider this test?

This test is a good fit for anyone who gets sick often, takes longer than usual to recover from infections, or has noticed unusual patterns in their health that might point to a weakened immune system. It's also useful for people managing chronic conditions that involve the immune system or those who simply want a clearer picture of their overall immune health. If you've had repeated viral infections like cytomegalovirus or varicella, this test can offer helpful insight.

What symptoms indicate I may need this test?

Common signs include getting sick more often than people around you, infections that take a long time to clear up, ongoing fatigue that doesn't have an obvious cause, or swollen lymph nodes that don't go away. Frequent viral infections, like repeated cold sores, shingles, or other reactivated viruses, can also be a signal. If any of these sound familiar, this test can help you understand what's going on beneath the surface.

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 online account, where you can view, download, and track them anytime.

How can I naturally support my immune cell health?

Getting enough quality sleep, staying physically active, and eating a diet rich in fruits, vegetables, and lean protein all help your immune cells function properly. Managing stress is also important, since chronic stress can suppress immune activity over time. Staying hydrated and limiting alcohol and processed foods can further support your body's natural defenses.

What does a low T or B cell count mean?

A low count means your body may have fewer of the immune cells needed to fight off infections, which can make you more vulnerable to viruses like cytomegalovirus or varicella. This doesn't always mean something is seriously wrong, but it's worth paying attention to, especially if you've been getting sick often. Simple steps like improving sleep, nutrition, and stress management can help support your immune system, and retesting can show if your numbers improve.

What causes low T or B cell counts?

Low counts can be caused by things like chronic stress, poor nutrition, lack of sleep, certain infections, or underlying health conditions that affect the immune system. Some medications can also lower these cell counts. Identifying and addressing the root cause, often starting with lifestyle factors, can help bring your levels back toward a healthy range.

How often should I retest?

If your results come back in the normal range and you feel well, retesting once a year or if new symptoms appear is generally reasonable. If your counts are low or you're actively working on lifestyle changes to support your immune system, retesting every 3 to 6 months can help you track your progress. Always retest sooner if you notice new or worsening symptoms.

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.

T and B Cell Test - Check Your Immune System Health

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]

T and B Cell Count Test — Immune System Health Check

T and B Cells, Total

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

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

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T and B Cell Count Test — Immune System Health Check

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

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