What's this test for?

This test is ideal if you're experiencing unexplained blood clots, especially in your legs or lungs, or if you've had repeated miscarriages or pregnancy complications. It looks for antibodies that can cause your blood to clot when it shouldn't. It's often used to help understand the underlying cause after these events have already happened, rather than as a routine screening for people without symptoms.

What's included in this test?

This test measures two specific antibody types, IgG and IgM, that target a combination of phosphatidylserine and prothrombin, two substances involved in normal blood clotting. When your immune system mistakenly makes antibodies against these substances, it can increase your risk of abnormal clotting, especially in veins, or contribute to pregnancy complications. Measuring both antibody types gives a fuller picture than testing for just one.

What happens after I get my results?

Your results will show up in your account with a clear explanation of what's considered a normal versus positive range for these antibodies. If your results are positive, next steps usually involve confirming the finding with repeat testing after 12 weeks, since a single positive result isn't enough to confirm a persistent problem. The full lab report is available to download anytime, and you can use the trends feature to track your levels if you're retested in the future. If you have symptoms like sudden leg swelling, chest pain, or shortness of breath, seek medical care right away rather than waiting for results.

How can I naturally support healthy blood clotting balance?

While antibody levels themselves aren't changed by lifestyle, you can support overall circulation and lower clotting risk factors through daily movement, staying hydrated, and avoiding long periods of sitting or immobility. Not smoking is one of the most impactful changes, since smoking significantly raises clotting risk. Eating a diet rich in omega-3 fats, like fatty fish, walnuts, and flaxseed, may support healthy circulation. Always keep any lifestyle changes in line with guidance you've already received about your specific situation.

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. Because this is a specialized antibody test, it takes a bit longer to process than routine bloodwork.

Who should consider this test?

This test is worth considering if you've had a blood clot in a vein with no clear explanation, especially if it happened at a younger age or without an obvious trigger like surgery. It's also relevant if you've had two or more unexplained miscarriages, a stillbirth, or severe pregnancy complications like preeclampsia. People already diagnosed with lupus or other autoimmune conditions may also consider this testing since these antibodies are more common in that group.

What symptoms indicate I may need this test?

Common signs include a blood clot in the leg (deep vein thrombosis) with swelling, pain, or warmth, or a clot that traveled to the lungs causing sudden shortness of breath or chest pain. Recurrent pregnancy loss, especially after the first trimester, is another key symptom pattern. Some people also notice unusual skin discoloration or a lace-like purplish pattern on the skin (livedo reticularis).

What is antiphospholipid syndrome and why does it matter?

Antiphospholipid syndrome is a condition where your immune system makes antibodies that attack proteins involved in normal blood clotting, making your blood more likely to clot abnormally. It matters because untreated, it can lead to serious problems like recurrent blood clots, stroke, or pregnancy loss. Identifying it allows for targeted management to reduce these risks going forward.

What does a positive PS/PT antibody result mean?

A positive result means these specific antibodies were found in your blood, which is associated with a higher risk of vein-related blood clots and pregnancy complications. One positive test isn't enough on its own to diagnose antiphospholipid syndrome — it typically needs to be confirmed with a repeat test at least 12 weeks later. If confirmed persistent, it's important information to have when planning any future pregnancies or in situations that raise clotting risk, like surgery or long flights.

How often should I retest?

If your first result is positive, retesting after 12 weeks is standard practice to see if the antibodies persist, since temporary positives can happen after infections or other short-term triggers. If your result is negative but you continue to have symptoms, retesting may be considered later based on how things progress. Ongoing monitoring frequency really depends on your personal history and any related conditions.

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.

PS/PT Antibody Test - Clotting & Pregnancy Loss Risk

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]

PS/PT Antibody Test for Blood Clots & Pregnancy Loss

Phosphatidylserine/Prothrombin (PS/PT) Antibodies (IgG, IgM)

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's included in this test?

What happens after I get my results?

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PS/PT Antibody Test for Blood Clots & Pregnancy Loss

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

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