What's this test for?

This test is ideal if you're being treated for ulcerative colitis or Crohn's disease with vedolizumab and your symptoms have come back or aren't improving as expected. It checks how much of the drug is actually in your blood and whether your body has started making antibodies against it. This helps explain why a treatment that once worked well might be losing its effect.

What happens after I get my results?

Your results will show up in your account with your vedolizumab drug level and antibody status, along with a simple explanation of what's considered a typical range. If your antibody result is above 15 ng/mL or your drug level looks low, the report will note what that generally means so you know what to watch for. You can download the full lab report from your account at any time, and if you get retested down the road, the trends feature lets you see how your levels change over time. If your levels suggest your treatment isn't working well, that's a good reason to seek medical care to discuss adjusting your treatment plan.

Who should consider this test?

Anyone currently on vedolizumab for ulcerative colitis or Crohn's disease whose symptoms are flaring up again after a period of feeling better should consider this test. It's also useful if you've been on the drug for a while and want to confirm it's still working as intended before making any changes to your routine. People who've noticed infusion reactions or unusual side effects may also want to check their antibody status.

What symptoms indicate I may need this test?

Returning symptoms like diarrhea, abdominal pain, urgency, or blood in your stool after previously responding well to vedolizumab are common signs. Unexplained fatigue, weight loss, or a flare-up despite sticking to your treatment schedule can also point to a drug level or antibody issue. If infusions suddenly feel less effective than before, this test can help explain why.

How can I naturally support gut health while on vedolizumab?

While this test doesn't replace your treatment plan, simple habits can support your gut alongside it: eating a fiber-balanced, low-processed-food diet, staying well hydrated, and managing stress through sleep and light exercise. Some people find probiotic-rich foods like yogurt or kefir helpful, though everyone's gut reacts differently. Keeping a symptom journal can also help you notice patterns between flares and daily habits.

When will I get my results?

Results for this test are typically ready within about 7 days of your sample being collected. You'll get a notification once your report is available in your account, so there's no need to check back constantly. If your results are delayed for any reason, your account will reflect the updated status.

What does a high anti-drug antibody level mean?

A result above 15 ng/mL means your immune system has started producing antibodies against vedolizumab, which can lower the amount of active drug circulating in your body. This is sometimes linked to reduced symptom control, even if you're taking your medication exactly as prescribed. If your level is high, it's worth seeking medical care to discuss whether your treatment plan needs adjusting.

What causes antibodies to form against vedolizumab?

Antibody formation is your immune system's natural response to a foreign protein, which is what a therapeutic antibody drug like vedolizumab technically is. It doesn't happen to most people on this medication since vedolizumab has a relatively low tendency to trigger this response, but it can occur more often with inconsistent dosing schedules or gaps in treatment. Genetics and individual immune differences also play a role in who develops antibodies.

How often should I retest?

Retesting is generally most useful when your symptoms change, a flare returns, or your treatment schedule has been inconsistent. Some people also retest a few months after starting vedolizumab to confirm the drug is reaching an effective level in their blood. Using the trends feature in your account can help you and your care team see whether levels are stable over time.

What should I do if my results are abnormal?

If your antibody level is elevated or your drug level looks low, start by reviewing the explanation in your report so you understand what the numbers mean for your specific case. Keep track of any symptom changes and note them alongside your results using the trends feature. Because this can affect how well your treatment is working, it's a good idea to seek medical care to talk through possible next steps.

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 - Crohn's & Colitis 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

[email protected]

Vedolizumab Drug Level and Antibody Blood Test

Vedolizumab Level and Anti-drug Antibody

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

What's this test for?

What happens after I get my results?

Who should consider this test?

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

Find a lab near you

Vedolizumab Drug Level and Antibody Blood Test

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

1,000,000+ blood tests later, here's what our customers say