What's this test for?

This test helps if you have a weakened immune system, such as from an organ transplant, chemotherapy, or a condition like HIV, and need to check for active BK or JC virus infection. It's also useful if you're experiencing unexplained kidney problems or neurological symptoms that could be linked to these viruses. Many people carry these viruses without symptoms, but they can reactivate and cause serious problems when the immune system is suppressed.

What happens after I get my results?

Your results will show up in your account with a clear explanation of what a positive or negative result means. If your result is positive, next steps typically involve retesting to track viral levels over time and making any lifestyle adjustments that support your immune health, while a negative result usually means no active infection is detected right now. You can download a standard lab report from your account at any time, and the trends feature lets you track your results over multiple tests if retesting is needed. If your result comes back positive alongside severe symptoms, seek medical care promptly.

Who should consider this test?

This test is a good fit for people with weakened immune systems, including transplant recipients, people on immunosuppressive medications, and those with conditions that affect immune function. It's also relevant for anyone who has developed unexplained kidney issues or neurological symptoms and wants to rule out these viral infections. If you've had a recent organ or bone marrow transplant, periodic screening may be recommended as part of routine monitoring.

What symptoms indicate I may need this test?

Symptoms that may point to a BK or JC virus reactivation include unexplained kidney function decline, blood in urine, or new neurological issues like vision changes, weakness, difficulty speaking, or confusion. These symptoms are more concerning if you have a suppressed immune system. If you notice sudden or severe neurological symptoms, seek medical care right away rather than waiting for test results.

When will I get my results?

Results for this test are typically ready within about 7 days of your sample being processed at the lab. You'll get a notification once your results are posted to your secure online account. From there, you can view the detailed report and download it whenever you need it.

What is BK and JC virus and why does it matter?

BK and JC viruses are common viruses that most people are exposed to in childhood and that usually stay dormant in the body without causing any problems. They matter because when the immune system is weakened, these viruses can reactivate and cause serious complications, such as kidney damage from BK virus or a rare but serious brain condition linked to JC virus. Testing helps catch reactivation early, before it leads to bigger health issues.

What does a positive result mean?

A positive result means the virus's genetic material was found in your sample, which suggests the virus is actively replicating rather than just sitting dormant. This doesn't automatically mean you're sick, but it's a signal worth paying attention to, especially if your immune system is compromised. Your results report will explain what your specific value means and whether retesting is a good next step.

What causes BK or JC virus to reactivate?

These viruses usually reactivate when the immune system is weakened, which can happen after an organ or stem cell transplant, during chemotherapy, or with conditions like HIV that suppress immunity. Certain medications that suppress the immune system are also common triggers. Managing overall health, reducing unnecessary immune suppression when possible, and staying on top of routine monitoring can help catch reactivation early.

How often should I retest?

If you have ongoing immune suppression, such as after a transplant, retesting every few months is common to catch reactivation early. If you test positive, more frequent monitoring may help track whether viral activity is increasing or decreasing over time. Your care situation and risk factors will determine the ideal schedule, so use the trends feature in your account to keep an eye on changes.

What should I do if my results are abnormal?

If your result is positive, it's worth keeping track of any new symptoms like kidney changes or neurological issues and scheduling a follow-up test to monitor the trend. Supporting your immune system through good nutrition, adequate rest, and avoiding unnecessary infections can help your body manage the virus. If you notice worsening symptoms, especially neurological changes, 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.

BK and JC Virus DNA Test - Immune System Monitoring

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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