Prothrombin (Factor II)
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Blood Test for Bleeding and Clotting Issues
Prothrombin (Factor II)
- Checks blood clotting ability
- Measures clotting protein levels
- Assesses risk of bleeding issues
$778
Example results
First results as soon as overnight*
90 day happiness guarantee
We stand behind our service
Prescription & fees included
Go directly to the lab, no extra fees
Easy to understand results
With friendly doctor's notes & guidance
Fast & convenient
Lab visit as quick as 10 mins in & out
90 day happiness guarantee
We stand behind our service
Prescription & fees included
Go directly to the lab, no extra fees
Easy to understand results
With friendly doctor's notes & guidance
Fast & convenient
Lab visit as quick as 10 mins in & out
What's this test for?
This test is ideal if you're experiencing unexplained bruising, frequent nosebleeds, heavy menstrual bleeding, or prolonged bleeding from minor cuts. It helps identify blood clotting disorders by measuring prothrombin levels, a key protein that helps your blood clot properly. Many people use this test when they have a family history of bleeding disorders or are being evaluated before surgery to ensure their blood clots normally.
How should I prepare for this test?
Generally, no special preparation is required for a prothrombin test. You can eat and drink normally before the test, and you don't need to fast. However, inform your healthcare provider about all medications you're taking, especially blood thinners or anticoagulants, as these can affect your results. Your provider will let you know if you need to temporarily stop any medications before testing.
What's included in this test?
This test measures prothrombin (Factor II), a crucial protein produced by your liver that plays a central role in the blood clotting cascade. By measuring prothrombin levels, this test helps identify bleeding disorders, clotting abnormalities, and can assess liver function since the liver produces this protein. It's particularly useful for diagnosing inherited bleeding disorders, evaluating unexplained bleeding episodes, and monitoring certain medical conditions that affect blood clotting.
What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining what your prothrombin level means for your clotting ability and bleeding risk. These notes include personalized recommendations such as dietary considerations, whether you need to avoid certain medications that affect clotting, or if you should consult with a hematologist. You'll also get the standard lab report and can track your prothrombin levels over time using our trends feature, which is especially helpful if you're managing a known clotting disorder or monitoring treatment effectiveness.
When will I get my results?
Results for this prothrombin test are typically available within 1-3 business days after your sample reaches the lab. You'll be notified as soon as your results are ready, and you can access them securely online along with the doctor notes that explain what your levels mean.
Who should consider getting this test?
This test is important for people with a family history of bleeding disorders, those experiencing unexplained or excessive bleeding, and individuals being evaluated before surgery. It's also useful for people with liver disease, those on blood-thinning medications who need monitoring, or anyone with symptoms like easy bruising, prolonged bleeding from cuts, or heavy menstrual periods that may indicate a clotting problem.
What symptoms indicate I may need this test?
Warning signs include frequent or severe nosebleeds, unexplained bruising that appears without injury, bleeding gums when brushing teeth, and cuts that bleed for longer than normal. Women may experience unusually heavy or prolonged menstrual periods. If you notice blood in your urine or stool, or if you develop small red or purple spots on your skin, these could also indicate a clotting problem worth investigating.
What is prothrombin and why does it matter?
Prothrombin, also known as Factor II, is a protein made by your liver that's essential for blood clotting. When you get a cut or injury, prothrombin is converted into thrombin, which then helps form blood clots to stop bleeding. Without adequate prothrombin levels, your blood may not clot properly, leading to excessive bleeding, while certain genetic variations can rarely cause increased clotting risk.
What does low prothrombin mean?
Low prothrombin levels mean your blood may not clot as effectively as it should, increasing your risk of bleeding and bruising. This can be caused by liver disease (since the liver makes prothrombin), vitamin K deficiency, certain inherited bleeding disorders, or the use of blood-thinning medications. Low levels require medical evaluation to determine the cause and appropriate treatment to prevent bleeding complications.
How often should I retest my prothrombin levels?
Retesting frequency depends on your individual situation. If you're monitoring a known bleeding disorder or liver condition, your doctor may recommend testing every 3-6 months. For people on blood-thinning medications, more frequent monitoring may be necessary. If your initial test is normal but you continue having symptoms, retesting in 2-3 months may be appropriate to track any changes.
How’s this work?
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 [email protected] and we'll gladly help you.
How do I know which test to get?
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?
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?
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?
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?
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.
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Demo results
Prothrombin (Factor II)
68%
Demo results
Low
Optimal 70 - 130%
High
68%
What this means
Your prothrombin level is slightly below the optimal range, which may affect your blood's ability to clot efficiently. While this is not severely low, it could contribute to easier bruising or slightly prolonged bleeding from minor cuts and may warrant closer monitoring.
Recommended actions
Ensure adequate vitamin K intake through leafy greens like kale, spinach, and broccoli
Discuss with your doctor whether any medications you take may be affecting clotting
Avoid aspirin and NSAIDs unless prescribed, as they can further affect clotting
Consider retesting in 2-3 months and consult a hematologist if levels remain low
* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.
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Blood Test for Bleeding and Clotting Issues
- Checks blood clotting ability
- Measures clotting protein levels
- Assesses risk of bleeding issues
$778
Example results
1,000,000+ blood tests later, here's what our customers say
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