What's this test for?

This test is ideal if you're following up on unusual cell findings and need more detail on what type of cells are present in a tissue sample. CD57 is a specialized marker used to help characterize certain white blood cells, including natural killer cells, and is often used alongside other testing when investigating blood or immune system concerns. It's typically ordered as part of a broader workup rather than as a stand-alone screening test.

What's included in this test?

This test uses immunohistochemistry (IHC) to detect the CD57 marker on cells in a submitted sample. It matters because identifying whether specific cells carry this marker helps characterize what type of cells are present, which is useful information when investigating certain blood or immune system findings.

What happens after I get my results?

Your results will be available in your account, along with an explanation of what the CD57 marker presence or absence means for the sample tested. Because this is a specialized pathology test, next steps usually involve looking at the result alongside any other testing you've had done rather than acting on it alone. You can download the full lab report from your account at any time, and if repeat testing is ever needed, you'll be able to track results over time using the trends feature.

Who should consider this test?

This test is generally considered by people who have already had abnormal findings on other blood work and need more specific cell characterization. It's also used when following up on findings related to natural killer cell activity or certain white blood cell conditions. Because it's a specialized test, it's usually ordered as a next step rather than a routine first test.

When will I get my results?

Results are typically ready within about 7 days of your sample being processed at the lab. This timeframe reflects the specialized nature of IHC testing, which involves careful lab processing and interpretation. You'll be notified as soon as your results are posted to your account.

What symptoms indicate I may need this test?

This isn't a test most people order based on symptoms alone. It's more commonly used after other blood tests show something unusual with white blood cells or immune function, and more detail is needed to understand what's going on. If you've been told a previous result showed unusual cell findings, this test may be a useful next step.

What is CD57 and why does it matter?

CD57 is a protein marker found on the surface of certain immune cells, most notably natural killer cells and some T-cells. Identifying whether cells carry this marker helps characterize the type and behavior of cells present in a sample, which can be important information when investigating certain blood or immune-related findings.

How can I naturally support healthy immune cell function?

While this test itself doesn't measure general immune health, everyday habits like getting consistent sleep, eating a balanced diet with plenty of vegetables and protein, staying physically active, and managing stress all support overall immune function. Limiting alcohol and not smoking are also simple ways to keep your immune system working well. These habits won't change a specific test result, but they support your overall health while you look into any findings.

What should I do if my results are abnormal?

If your CD57 result comes back showing something unexpected, the report will explain what that finding typically means. Since this test is usually part of a bigger picture, it's helpful to look at it together with any other recent blood work or findings you've had. If you're experiencing concerning symptoms alongside an abnormal result, seek medical care promptly.

How often should I retest?

Retesting frequency really depends on why the test was ordered in the first place rather than a fixed schedule. If you're monitoring a known finding over time, your testing pattern so far is usually the best guide for when to check again. You can keep track of any repeat results easily using the trends feature in your account.

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.

CD57 IHC Test - Immune Cell Characterization

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]