--- title: Fibrinogen Activity Test type: test id: fibrinogen url: "https://www.test-well.com/tests/fibrinogen-test" price_usd: 22.99 lab_fee_usd: 6 all_in_usd: 28.99 cpt: 85384 category: Heart Health sample: Blood draw fasting_required: false results_in: "2–4 business days" labs: - Quest - Labcorp - BioReference orderable: true reviewed_at: 2026-09-14 order_url: "https://www.test-well.com/cart?add=fibrinogen-test&utm_source=ai_agent&utm_medium=markdown" --- # Fibrinogen Activity Test > Measures fibrinogen, a clotting protein and independent cardiovascular risk factor linked to inflammation, measured from a standard blood draw. At TestWell it costs $22.99 plus a $6 lab fee, needs no fasting, and results post in 2–4 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest or Labcorp. ## Key facts | Fact | Value | | --- | --- | | Price | $22.99 + $6 lab processing fee per order ($28.99 all-in for this test alone) | | CPT code | 85384 | | Sample | Blood draw | | Fasting | Not required | | Results | 2–4 business days | | Labs | Quest Diagnostics, Labcorp, BioReference (NY & NJ) | | Biomarkers measured | 1 | | Physician authorization | Included — no doctor's visit, referral or insurance needed | | Payment | Card, HSA or FSA; cash-pay only (no insurance billing) | ## What does the Fibrinogen Activity test tell you? Measures fibrinogen, a clotting protein and independent cardiovascular risk factor linked to inflammation. 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. **Clinical use:** Cardiovascular biomarkers identify hidden risk for heart attack and stroke years before symptoms appear, allowing for earlier intervention with diet, exercise, or medication. ## Who should order it? 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. ## Biomarkers measured - [Fibrinogen Activity](https://www.test-well.com/biomarkers/fibrinogen) ## Price by lab | Lab | Test price | All-in (with $6 fee) | Notes | | --- | --- | --- | --- | | Quest Diagnostics | $22.99 | $28.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | | Labcorp | $22.99 | $28.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | | BioReference (NY & NJ) | $30.99 | $36.99 | New York and New Jersey orders route here automatically | Rhode Island is not served. Prices are identical online and in the lab; no draw fee or physician fee is added. ## How much does a Fibrinogen Activity test cost? A Fibrinogen Activity test costs $22.99 at TestWell — $28.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Hospital outpatient labs typically bill around $125.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible. | Where you order | Price | One test, all-in | Notes | | --- | --- | --- | --- | | TestWell (drawn at Quest or Labcorp) | $22.99 | $28.99 | Includes the one $6 lab processing fee, charged once per order | | Hospital outpatient lab, self-pay (typical) | $125.00 | $125.00 | Reference figure; hospital charges vary widely by facility and are often higher | Lab test codes: Quest test code 461 · Labcorp test no. 001610 · BioReference code 0089-3. ## How do you prepare? No fasting required. ## Related conditions - [Cardiovascular disease risk](https://www.test-well.com/conditions/heart-disease-risk) - Dyslipidemia (E78.5) ## Common questions about the Fibrinogen Activity test ### How long do Fibrinogen Activity results take? Most Fibrinogen Activity results are available in 2–4 business days after your specimen arrives at the lab. You'll get an email the moment results are ready, with everything viewable in your TestWell portal. ### What sample is collected for the Fibrinogen Activity? Blood draw. Sample is collected at a Quest, Labcorp, or BioReference patient service center near you, or via at-home phlebotomy where available. ### How much does the Fibrinogen Activity cost without insurance? On TestWell, the Fibrinogen Activity is $22.99. Quest Direct lists comparable tests at $30. Walk-in hospital labs typically bill $125 or more without insurance. Insurance is not required — pay one all-in price. ### Do I need to fast before the Fibrinogen Activity? No fasting required for the Fibrinogen Activity. No fasting required. ### Where can I get the Fibrinogen Activity done? The Fibrinogen Activity is available at Quest and Labcorp patient service centers nationwide. Order online at TestWell, pick your preferred lab, and we'll generate a digital requisition for the location closest to you. ## How to order 1. Add to cart: https://www.test-well.com/cart?add=fibrinogen-test&utm_source=ai_agent&utm_medium=markdown 2. Create an account or sign in, confirm your state and preferred lab, pay by card, HSA or FSA. 3. A licensed physician authorizes the order (usually within minutes); the requisition arrives by email. 4. Walk into any Quest Diagnostics, Labcorp, BioReference (NY & NJ) patient service center — no appointment needed at most sites. 5. Results post to your TestWell portal in 2–4 business days with reference ranges and flags. ## Related - [Blood Clotting Panel](https://www.test-well.com/tests/blood-clotting-panel) — 4 tests · $149.99 - [Inflammation Panel](https://www.test-well.com/tests/inflammation-panel) — 7 tests · $119.99 - [Total Body Panel](https://www.test-well.com/tests/total-body-panel) — 49 tests · $499.99 - [Advanced Cholesterol Particle Test (NMR)](https://www.test-well.com/tests/nmr-lipoprofile) — $70.99 - [ApoB — Heart Attack Risk Predictor](https://www.test-well.com/tests/apolipoprotein-b) — $30.99 - [ApoE Genotype (Cardiovascular Risk)](https://www.test-well.com/tests/apoe-genotype-cardio) — $133.99 - [Homocysteine](https://www.test-well.com/tests/homocysteine) — $27.99 - [Lp(a) Hereditary Heart Risk Test](https://www.test-well.com/tests/lipoprotein-a) — $34.99 - [All Heart Health tests](https://www.test-well.com/tests/category/heart-health) - [Full test directory](https://www.test-well.com/tests/directory) --- Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-14. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/tests/fibrinogen-test Machine-readable catalog: https://www.test-well.com/api/catalog.json · MCP server: https://www.test-well.com/mcp · Overview for agents: https://www.test-well.com/llms.txt Prices are cash-pay, in USD, and include physician authorization; every order adds one flat $6 lab processing fee. Educational content is not a diagnosis — discuss results with a clinician.