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Fibrinogen test for assessing blood clot risks and cardiovascular health

Blood Test for Heart Attack Risk and Blood Clotting

Fibrinogen Activity

Google
3,138 reviews
  • Pinpoint blood clot risks accurately
  • Reveal inflammation levels effortlessly
  • Assess cardiovascular health comprehensively
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 have concerns about blood clotting disorders, unexplained bleeding or bruising, or a family history of clotting issues. It helps assess your risk for cardiovascular problems by measuring fibrinogen, a protein essential for blood clot formation and an important marker of inflammation. Many people use this test when they want to understand their heart attack risk or have symptoms that suggest bleeding or clotting problems.

How should I prepare for this test?

No fasting is required for this test, making it convenient to schedule at any time of day. You can eat and drink normally before your blood draw. Simply visit your chosen lab location at your convenience for a quick blood sample collection.

What's included in this test?

Fibrinogen Activity, Clauss

This test measures Fibrinogen Activity using the Clauss method, which evaluates how well your blood forms clots. Fibrinogen is a crucial protein that your body uses to stop bleeding and repair blood vessels, but elevated levels also indicate inflammation and increased cardiovascular risk. This measurement helps identify bleeding disorders, assess your risk for heart attack and stroke, and provides insight into overall cardiovascular health.

What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining what your fibrinogen level means for your cardiovascular health and clotting function. These notes include personalized recommendations like lifestyle modifications, dietary changes to reduce inflammation, or whether you should follow up with a cardiologist or hematologist. You'll also get the standard lab report and can track your fibrinogen levels over time using our trends feature to monitor your heart health and see how interventions are working.
Who should consider getting this test?
This test is important for people with a family history of bleeding or clotting disorders, those who have experienced unexplained bleeding or bruising, and individuals concerned about cardiovascular disease risk. It's also valuable if you have chronic inflammation, are at risk for heart disease, or your doctor suspects a fibrinogen deficiency or dysfunction that could affect your health.
What symptoms indicate I may need this test?
Consider this test if you experience unexplained or excessive bleeding, frequent bruising without clear cause, or prolonged bleeding from minor cuts. Other indicators include a family history of bleeding disorders, difficulty forming blood clots after injury, or if your doctor has expressed concerns about your cardiovascular risk or inflammation levels.
What is fibrinogen and why does it matter?
Fibrinogen is a protein produced by your liver that plays a critical role in blood clotting and wound healing. When you get injured, fibrinogen converts to fibrin, which forms the structural framework of blood clots to stop bleeding. Beyond clotting, fibrinogen is also a marker of inflammation, and elevated levels are associated with increased risk of heart attack, stroke, and other cardiovascular problems.
What does high fibrinogen mean?
High fibrinogen levels typically indicate inflammation in your body and are associated with increased cardiovascular risk. Elevated fibrinogen makes your blood thicker and more prone to clotting, which can increase your risk of heart attack, stroke, or blood clots in your legs or lungs. Common causes include smoking, obesity, stress, infections, or inflammatory conditions.
What does low fibrinogen mean?
Low fibrinogen levels suggest your blood may not clot properly, which can lead to excessive bleeding. This can be caused by inherited fibrinogen deficiencies, liver disease affecting fibrinogen production, or conditions where fibrinogen is being consumed faster than it's produced. Symptoms may include easy bruising, prolonged bleeding from cuts, or heavy menstrual periods.
How can I naturally support healthy fibrinogen levels?
To maintain healthy fibrinogen levels, focus on reducing inflammation through an anti-inflammatory diet rich in omega-3 fatty acids from fish, nuts, and seeds. Regular exercise helps lower elevated fibrinogen and reduces cardiovascular risk. Quit smoking if applicable, manage stress through relaxation techniques, maintain a healthy weight, and ensure adequate sleep, as these lifestyle factors all influence fibrinogen levels and overall heart health.
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
Instant orders, results often 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
Fibrinogen Activity 425 mg/dL
Demo results
Low Optimal 200 - 400 High
425 mg/dL

What this means

Your fibrinogen level is elevated above the optimal range, which indicates increased inflammation in your body and higher cardiovascular risk. Elevated fibrinogen makes your blood more prone to clotting and is associated with increased risk of heart attack and stroke. This is a meaningful finding that warrants attention to reduce inflammation and protect your heart health.

* 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.
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

Blood Test for Heart Attack Risk and Blood Clotting

Google
3,138 reviews
  • Pinpoint blood clot risks accurately
  • Reveal inflammation levels effortlessly
  • Assess cardiovascular health comprehensively

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

Google reviews 3138 reviews Next
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.