What's this test for?

This test is ideal if you're experiencing unexplained symptoms like fatigue, joint pain, sinus problems, coughing up blood, or blood in your urine that could point to blood vessel inflammation. It helps check for a type of autoimmune activity where your immune system mistakenly attacks small blood vessels, which can affect organs like the kidneys and lungs. It's often used when there's concern about ongoing inflammation that doesn't have an obvious cause.

What happens after I get my results?

Your results will be available in your account, with each value's normal range clearly explained so you know exactly where you stand. If your result is elevated, next steps typically include seeking prompt medical care since this can signal active inflammation that needs attention quickly. You can download a standard lab report directly from your account at any time, and if you retest in the future, the trends feature lets you track changes over time.

Who should consider this test?

People with unexplained symptoms affecting their kidneys, lungs, sinuses, or joints that have lasted for weeks without a clear cause may want to consider this test. It's also useful for those who've had unusual lab findings, like blood or protein in urine, along with respiratory symptoms. Anyone concerned about ongoing, unexplained inflammation in the body may find this test provides helpful information.

What symptoms indicate I may need this test?

Common signs include persistent sinus issues, coughing up blood, shortness of breath, unexplained fatigue, joint or muscle pain, and skin rashes that don't go away. Blood or protein showing up in urine tests can also be a red flag. If you're noticing several of these symptoms together, especially if they're getting worse, this test can help investigate the cause.

When will I get my results?

Results are typically ready within about 7 days after your sample is collected at the lab. Once ready, you'll be able to view them securely in your account. You'll also be able to download a full lab report and track any future results over time using the trends feature.

How can I naturally support blood vessel health?

Eating an anti-inflammatory diet rich in fruits, vegetables, and omega-3 fatty acids (like fish and walnuts) can help support your body's natural inflammation response. Staying hydrated, avoiding smoking, and getting regular, moderate exercise also support healthy circulation and blood vessels. Managing stress through good sleep and relaxation techniques may help too, since chronic stress can worsen inflammation. These steps support general wellness but aren't a substitute for addressing an active autoimmune condition.

What is Proteinase-3 antibody and why does it matter?

Proteinase-3 antibody, often called PR3-ANCA, is a specific antibody your immune system may produce when it mistakenly targets your own blood vessels. It matters because when present at higher levels, it's closely linked to a type of vasculitis that can damage small blood vessels in the kidneys, lungs, and sinuses. Detecting it early can help identify inflammation before it causes lasting organ damage.

What does a high Proteinase-3 antibody result mean?

A high result suggests your immune system may be producing antibodies associated with vessel inflammation, which is seen in certain autoimmune vasculitis conditions. This doesn't automatically mean you have a disease, but it's a strong signal that further evaluation is important, especially if you have related symptoms. Because these conditions can progress quickly, an elevated result paired with symptoms should prompt fast follow-up care.

What causes an elevated Proteinase-3 antibody level?

Elevated levels are most often linked to ANCA-associated vasculitis, a group of conditions where the immune system attacks small blood vessels. Triggers can include certain infections, other autoimmune diseases, or in some cases, reactions to specific medications. In many cases, the exact trigger isn't fully understood, which is why testing and monitoring symptoms together is important.

How often should I retest?

If your first result comes back normal and you have no symptoms, retesting usually isn't needed unless new symptoms develop. If you've had a positive result or are managing symptoms, more frequent retesting, such as every few months, can help track how levels change over time. Using the trends feature in your account makes it easy to see patterns across multiple tests.

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.

Proteinase-3 Antibody Test - Vasculitis Screening

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]

Proteinase-3 Antibody Test for Vasculitis Symptoms