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Genetic clotting risk test for those with family history of blood clots or miscarriage

PAI-1 4G/5G Genetic Clotting Risk Test

Plasminogen Activator Inhibitor-1 (PAI-1) 4G/5G

  • Screen for inherited blood clot risk
  • Assess your miscarriage risk factors
  • Check heart attack risk genes
$1000
First results as soon as overnight*

All results normal? Get your money back. First-time customers only. File a support ticket titled “Money Back Guarantee” with your order number within 15 days of receiving your results. STD, Sickle Cell, and gift orders aren’t eligible. Full terms apply. guarantee
No questions asked refunds
LegitScript certified

Prescription & all lab fees included

Go directly to the lab, no extra fees

Doctor's guidance included

Easy to understand results

Fast & convenient

Lab visit as quick as 10 mins in & out

  • Many results come back overnight *
  • 90-day money back guarantee
  • Save time & skip the doctor’s office
  • Lab visit as quick as 10 minutes
  • Results explained, with clear next steps
  • LegitScript certified
  • No questions asked refunds
  • The price you see is the price you pay
  • Many results come back overnight *
  • 90-day money back guarantee
  • Save time & skip the doctor’s office
  • Lab visit as quick as 10 minutes
  • Results explained, with clear next steps
  • LegitScript certified
  • No questions asked refunds
  • The price you see is the price you pay

What's this test for?

This test is ideal if you're experiencing recurrent miscarriages, unexplained blood clots, or have a family history of clotting disorders. It looks at a gene variant that can raise the risk of your blood clotting too easily, which can lead to problems like deep vein thrombosis, heart attack, or pregnancy loss. It's often used when someone wants to understand an inherited reason behind these health events.

What's included in this test?

This test looks specifically at a variation in the gene that controls PAI-1, a protein involved in how your body breaks down blood clots. Understanding this single genetic marker helps explain a hidden, inherited reason why some people are more prone to clotting problems, heart issues, or pregnancy complications than others.

What happens after I get my results?

Your results will appear in your account along with an explanation of what a normal versus abnormal gene finding means. If your result shows the higher-risk 4G variant, simple next steps include talking through lifestyle changes like staying active, not smoking, and staying hydrated to support healthy blood flow, since this is a lifelong genetic result and does not need to be retested. A standard lab report is available for download from your account, and while this particular result won't change over time, you can use the trends feature to track any related bloodwork like clotting factors you test alongside it.

When will I get my results?
Results are typically ready within about 7 days of your sample being collected at the lab. Because this is a genetic test, processing can take a bit longer than routine bloodwork, so you'll see your results posted directly to your secure online account as soon as the lab finishes analysis.
Who should consider this test?
This test is a good fit for people with a personal or family history of blood clots, strokes, or heart attacks at a young age. It's also worth considering if you've had multiple unexplained miscarriages or if a close relative has already tested positive for the PAI-1 4G variant.
What symptoms indicate I may need this test?
Watch for signs like swelling or pain in one leg, unexplained shortness of breath, or a history of blood clots without an obvious cause. Repeated pregnancy loss, especially in the first trimester, is another common reason people look into this test. If you've had a clot-related event and no one can explain why, this genetic marker might be part of the picture.
How can I naturally support healthy blood flow?
Staying active with regular movement, drinking enough water, and avoiding long periods of sitting can all help support healthy circulation. Eating a diet rich in omega-3 fats, like fish and walnuts, and cutting back on processed foods may also help. Avoiding smoking is one of the biggest steps you can take, since smoking significantly raises clotting risk.
What is PAI-1 and why does it matter?
PAI-1 is a protein your body makes that controls how quickly blood clots get broken down. When you carry the 4G gene variant, your body tends to produce more PAI-1, which can make your blood clot more easily than it should. Knowing this can help explain unexplained clotting events or pregnancy losses and guide precautionary lifestyle steps.
What causes higher PAI-1 activity?
Higher PAI-1 activity is largely driven by carrying the 4G version of the gene instead of the more common 5G version. Other factors like obesity, insulin resistance, inflammation, and lack of exercise can further increase PAI-1 levels on top of a genetic predisposition. Managing weight and inflammation through diet and activity can help offset some of this added risk.
What should I do if my results show the 4G variant?
If you test positive for the 4G variant, focus on lifestyle habits that support healthy blood flow, such as regular exercise, not smoking, and maintaining a healthy weight. If you notice symptoms like leg swelling, chest pain, or sudden shortness of breath, seek medical care right away, as these can signal a clot. It also may be helpful to share this genetic information with family members, since it can run in families.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email [email protected] 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 [email protected], and we'll gladly help you. We've got your back and reply quickly.
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 [email protected]. 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 [email protected].
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 [email protected].

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 [email protected] and we'll gladly help you.

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

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Get lab order in minutes, results come overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
PAI-1 4G/5G Gene Variant 4G/4G (Positive)
Demo results
5G/5G or 4G/5G - Normal Risk 4G/4G - Increased Risk
4G/4G (Positive)

What this means

A result of 4G/4G means you carry two copies of the gene variant linked to higher PAI-1 levels, which can make your blood more prone to clotting. This doesn't mean a clot will happen, but it's a genetic factor worth being aware of, especially alongside other risk factors like smoking or inactivity.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More advanced tests may take longer due to complexity.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Find a lab near you

Search Quest Diagnostics and LabCorp locations available through Private MD Labs.

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PAI-1 4G/5G Genetic Clotting Risk Test

  • Screen for inherited blood clot risk
  • Assess your miscarriage risk factors
  • Check heart attack risk genes
$1000
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.
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For informational purposes only. Not medical advice.