What's this test for?

This test is ideal if you're following up on a biopsy or tissue sample that needs further characterization to identify the type of cells present. It's often used when there's a concern about blood-related cell abnormalities, including certain cancers, and more information is needed to understand what's happening at the cellular level. Your results help clarify what kind of cells are involved so the right next steps can be planned.

What's included in this test?

This test uses a technique called immunohistochemistry (IHC) to look for a specific marker, called CD138, on cells in a tissue or biopsy sample. This marker helps identify a specific type of blood cell called a plasma cell, which can be useful when investigating certain blood-related conditions. Looking at whether this marker is present or absent gives helpful information about the identity and behavior of the cells being studied.

What happens after I get my results?

Your results will be available in your account along with an explanation of what the findings mean. Because this is a specialized cellular marker test, next steps typically depend on the specific pattern found, so the report explains what each result means and what kind of follow-up testing may be useful. You can download a standard lab report from your account at any time, and if you have related testing over time, you can track those results using the trends feature.

How can I naturally support healthy blood cell function?

While this test looks at specific cell markers that aren't directly changed by lifestyle, general habits that support your immune and blood cell health include eating a balanced diet rich in fruits, vegetables, and lean protein. Staying hydrated, getting regular exercise, and getting enough sleep all support healthy blood cell production. Avoiding smoking and limiting alcohol also helps support long-term cellular health.

When will I get my results?

Results for this test are typically ready within about 7 days. This is a bit longer than routine blood work because the sample needs specialized processing and analysis to identify the specific cell marker being tested. You'll be notified as soon as your results are available in your account.

Who should consider this test?

This test is generally considered when a previous biopsy or tissue sample needs more detailed evaluation. It's often used as a follow-up test rather than a first-line screening, particularly when there are concerns about blood cell abnormalities or unexplained findings in a tissue sample. It may also be recommended as part of a broader panel of cell marker tests to fully characterize a sample.

What is CD138 and why does it matter?

CD138 is a protein found on the surface of plasma cells, which are a type of white blood cell that helps your body fight infection. Testing for this marker helps identify whether plasma cells are present in a sample and can provide important information when investigating certain blood-related conditions. It's one of several markers used together to build a clearer picture of what's happening with the cells in question.

What does it mean if CD138 is present in my sample?

A positive result means the marker was detected on cells in your sample, which tells the lab that plasma cells are present. On its own, this finding doesn't diagnose any specific condition, but it's a helpful piece of the puzzle when combined with other test results and the full clinical picture. The full report explains what a positive finding suggests in the context of your specific sample.

How often should I retest?

This is a specialized, targeted test that's typically ordered once for a specific tissue sample rather than repeated on a routine schedule. Retesting would generally only be considered if a new tissue sample needs evaluation, such as after treatment or if new symptoms arise. Your results report will note if any follow-up testing is suggested.

What should I do if my results are unclear or concerning?

If your results show a finding that needs more explanation, start by carefully reading the full report, which breaks down what the marker result means. Consider discussing next steps with the lab or ordering related tests if the report recommends further characterization. If you're experiencing symptoms like unexplained fatigue, bone pain, or frequent infections, it's a good idea to seek medical care promptly.

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.

CD138 IHC Test - Plasma Cell Marker Analysis

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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