What's this test for?

This test is ideal if you're being treated with vedolizumab for ulcerative colitis or Crohn's disease and want to know if your dose is working the way it should. It measures how much vedolizumab is in your blood right before your next dose, which can help explain why symptoms might still be flaring even while on treatment. It's especially useful if your gut symptoms have come back or never fully went away despite ongoing infusions.

What's included in this test?

This test measures a single, specific marker: the amount of vedolizumab drug circulating in your blood at trough (right before your next dose). Knowing this number matters because vedolizumab only works when there's enough of it in your system to block the gut inflammation pathway it targets, and levels that are too low are linked to a lower chance of remission.

What happens after I get my results?

Your vedolizumab level will show up in your account along with the reference ranges so you can see exactly where your number falls. If your level is on the low side, that may explain ongoing symptoms and could be a sign that a dosing change is worth discussing with the team managing your infusions; if it's within the expected range, your current schedule may just need more time to work. You can download the full lab report from your account at any time, and if you get tested again later, the trends feature lets you track how your levels change between infusions or after dose adjustments.

How can I naturally support gut healing during biologic treatment?

While vedolizumab levels themselves are managed through dosing rather than lifestyle, you can support your gut health alongside treatment. Eating an anti-inflammatory diet with plenty of fiber, staying well hydrated, getting consistent sleep, and managing stress can all help reduce overall gut inflammation. Avoiding smoking and limiting NSAIDs like ibuprofen is also commonly recommended since these can aggravate flares.

When will I get my results?

Results are typically ready within about 7 days of your blood draw. You'll get a notification once your report is available in your account, so there's no need to call in or follow up to check status.

Who should consider this test?

This test is a good fit for anyone currently on vedolizumab infusions for ulcerative colitis or Crohn's disease, especially if symptoms have returned, treatment doesn't seem to be working as well as expected, or dosing changes are being considered. It's also useful during the maintenance phase to confirm drug levels are staying in a range associated with remission.

What symptoms indicate I may need this test?

Returning abdominal pain, diarrhea, blood in the stool, unexplained weight loss, or fatigue while on vedolizumab treatment are all signs worth checking your drug level for. These symptoms can mean your body is clearing the drug faster than expected or that your current dose isn't quite enough. Catching this early can help guide next steps before a full flare develops.

What does a low vedolizumab level mean?

A low trough level means there may not be enough active drug in your system between doses to fully control gut inflammation. Research suggests maintenance levels above about 5.1 mcg/mL are linked to better rates of remission, so falling below that may explain ongoing symptoms. This is typically addressed by adjusting the dose or infusion frequency.

What causes low vedolizumab levels?

Low levels can happen when the body clears the drug faster than average, when inflammation is severe enough to increase drug loss through the gut, or simply because the current dosing schedule isn't matched to your individual needs. Missed or delayed infusions can also lower your trough level. Retesting after a dosing adjustment can show whether levels have improved.

How often should I retest?

Many people on vedolizumab retest around the time of dose adjustments or when symptoms change, since a single trough level mainly reflects that specific point in your treatment cycle. Testing before a scheduled infusion (trough timing) gives the most accurate and comparable picture over time. Using the trends feature after each test can help you and your treatment team see patterns across multiple infusion cycles.

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.

Vedolizumab Level Test - Monitor IBD Biologic Treatment

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]

Vedolizumab Drug Level Blood Test