Hospital Lab
$125
cash pay
Other Labs
$30
+ lab fees
TestWell
$22.99
+ $6 lab fee
Fibrinogen is a protein produced by the liver that plays a central role in blood clot formation. Beyond clotting, elevated fibrinogen is an independent risk factor for heart attack and stroke — it reflects both inflammation and a hypercoagulable state. It rises during acute illness, chronic inflammation, smoking, and obesity. Monitoring fibrinogen alongside hs-CRP provides a more complete picture of cardiovascular inflammation.
Cardiovascular biomarkers identify hidden risk for heart attack and stroke years before symptoms appear, allowing for earlier intervention with diet, exercise, or medication.
Adults 35+ for routine cardio screening, anyone with family history of premature heart disease, and patients tracking response to statins, lifestyle changes, or other cardiovascular therapy.
Sample Type
Blood draw
Fasting
Not required
Results In
2–4 business days
Performed At
Quest or Labcorp
Your Fibrinogen Activity results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 2–4 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
Your Fibrinogen Activity results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 2–4 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
No fasting required.
No fasting required.
TestWell Price
$22.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
Better value: the Blood Clotting Panel
Save $50.97This test is part of the Blood Clotting Panel — 4 tests · 19 biomarkers for $149.99, $50.97 less than à la carte.
$149.99$200.96
4 tests · 19 biomarkers
Frequently ordered together
Customers who ordered Fibrinogen Activity also added these for a more complete health picture.
Not sure where to start?
Fibrinogen Activity
$22.99