What's this test for?

This test is ideal if you're being evaluated for a possible blood cancer or lymphoma and a tissue sample needs closer examination. PAX-5 IHC (immunohistochemistry) with interpretation helps identify whether cells in a tissue sample are B-cells, which is important for diagnosing and classifying certain cancers like lymphoma and leukemia. It's typically ordered as a follow-up to imaging or biopsy findings that raised concern.

What happens after I get my results?

Your results will be available in your account along with an explanation of what the finding means for your tissue sample. Because this is a specialized pathology test, next steps often involve discussing the interpretation findings with the specialist managing your care and deciding whether additional testing is needed. A standard lab report is available to download directly from your account for your records. You can also revisit your results anytime using the trends feature to keep a history of your testing.

What's included in this test?

This test includes a PAX-5 immunohistochemistry stain performed on a tissue sample, along with a written pathologist interpretation of the findings. PAX-5 staining matters because it helps confirm whether abnormal cells are B-lymphocytes, which narrows down the type of cancer or condition being investigated. The interpretation translates the staining pattern into a clear, usable finding for diagnosis.

How can I naturally support immune and lymphatic health?

While this test itself isn't something lifestyle changes affect, supporting your overall immune and lymphatic system can be helpful during this process. Staying hydrated, eating a diet rich in vegetables and antioxidants, getting regular movement, and prioritizing sleep all support immune function. Reducing alcohol and avoiding smoking can also help your body cope better during evaluation and any treatment.

When will I get my results?

Results for this test are typically available within about 7 days after your sample is processed. Because this involves a specialized staining and interpretation process, it can take a bit longer than a standard blood test. You'll be notified as soon as your results are ready to view in your account.

Who should consider this test?

This test is generally considered for people who already have a tissue biopsy pending further classification, often after suspicious findings on imaging or a physical exam. It's commonly used when there's concern for lymphoma, leukemia, or another condition involving abnormal B-cells. It is typically ordered as part of a broader diagnostic workup rather than as a standalone screening test.

What symptoms indicate I may need this test?

Symptoms that might lead to this type of testing include unexplained swollen lymph nodes, persistent fatigue, unexplained weight loss, night sweats, or recurring fevers. These symptoms alone don't confirm a diagnosis, but they're often what prompts a biopsy and further tissue analysis like this one. If you're experiencing these symptoms alongside a known mass or lump, this test may be relevant to your workup.

What is PAX-5 and why does it matter?

PAX-5 is a protein that acts like a switch controlling how B-cells (a type of immune cell) develop and function. Because PAX-5 is present in B-cells at nearly every stage of their development, staining for it helps pathologists confirm whether cells found in a tissue sample are B-cells. This is a key piece of information used to identify and classify certain blood cancers.

What does a positive PAX-5 result mean?

A positive PAX-5 result means the cells in the tissue sample show the marker typically found on B-cells, which suggests the abnormal cells being examined are B-cell in origin. This finding is used alongside other tests to help classify the specific type of lymphoma or leukemia present. It does not by itself confirm a cancer diagnosis but adds an important piece to the overall picture.

What should I do if my results are concerning?

If your results show findings that need further attention, the next step is usually additional testing or a follow-up biopsy to get a complete picture. Keep a copy of your report handy since it may be needed for further evaluation or a second opinion. If you're experiencing severe symptoms like difficulty breathing, unexplained severe pain, or rapid worsening of symptoms, seek medical care right away.

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.

PAX-5 IHC Test - B-Cell Lymphoma Evaluation

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]

PAX-5 IHC Test with Pathologist Interpretation

PAX-5, IHC with Interpretation

Prescription & fees included

Easy to understand results

Fast & convenient

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

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PAX-5 IHC Test with Pathologist Interpretation

Prescription & fees included

Easy to understand results

Fast & convenient

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