--- title: Fibrinogen Test type: biomarker url: "https://www.test-well.com/biomarkers/fibrinogen" also_known_as: - fibrinogen - fibrinogen activity category: Metabolic Health units: - mg/dL order_price_usd: 22.99 order_item: Fibrinogen Activity order_url: "https://www.test-well.com/tests/fibrinogen-test" reviewed_at: 2026-09-05 --- # Fibrinogen > Fibrinogen is measured with a standard blood draw; no fasting is needed. A typical reference range is 200 – 400 mg/dL. At TestWell it's $22.99 all-in as Fibrinogen Activity, results in 2–4 business days, drawn at Quest or Labcorp. An out-of-range result is a prompt to look closer, not a diagnosis. Also known as: fibrinogen, fibrinogen activity. ## Key facts | Fact | Value | | --- | --- | | Units | mg/dL | | Sample | Blood draw | | Fasting | Not required | | Results | 2–4 business days | | Price | $22.99 | | Labs | Quest or Labcorp · BioReference in NY/NJ | ## What does Fibrinogen measure? A clotting protein. Also rises with inflammation as an acute-phase reactant. ## What is the normal range for Fibrinogen? | Population | Reference range | | --- | --- | | age 18+ | 200 – 400 mg/dL | Reference intervals differ slightly between labs; the range printed on your report is the one to interpret against. Ranges are usually set so 95% of healthy people fall inside them. ## What does a high Fibrinogen mean? Often reflects inflammation, infection, or pregnancy. ## What does a low Fibrinogen mean? Can reflect liver disease, severe bleeding, or rare genetic factor deficiency. ## How do you get tested for Fibrinogen? | Order | Type | Price | Includes | | --- | --- | --- | --- | | [Fibrinogen Activity](https://www.test-well.com/tests/fibrinogen-test) | Single test | $22.99 | This marker | | [Inflammation Panel](https://www.test-well.com/tests/inflammation-panel) | Panel | $119.99 | 7 tests | | [Blood Clotting Panel](https://www.test-well.com/tests/blood-clotting-panel) | Panel | $149.99 | 4 tests | | [Total Body Panel](https://www.test-well.com/tests/total-body-panel) | Panel | $499.99 | 49 tests | ## Quest vs Labcorp vs BioReference | Lab | Available | Price | Notes | | --- | --- | --- | --- | | Quest Diagnostics | Yes | $22.99 | Choose Quest at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ. | | Labcorp | Yes | $22.99 | Choose Labcorp at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ. | | BioReference (NY & NJ) | Yes | $30.99 | New York and New Jersey orders route here automatically — state rules keep Quest and Labcorp from accepting self-ordered draws. | - [What a high Fibrinogen means (causes, symptoms, next steps)](https://www.test-well.com/biomarkers/fibrinogen/high) - [What a low Fibrinogen means (causes, symptoms, next steps)](https://www.test-well.com/biomarkers/fibrinogen/low) ## Common questions about Fibrinogen ### Do I need a doctor's order to test my fibrinogen? No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor. ### How long does it take to get Fibrinogen results? Most Fibrinogen results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment your results are ready, with everything viewable in your TestWell portal. ### How much does a Fibrinogen test cost? Our Fibrinogen Activity starts at $22.99. That's the all-in price — no copays, no insurance hoops, no surprise bills. HSA and FSA cards are accepted. ### Do I need to fast before my Fibrinogen test? Fasting is not required for the Fibrinogen test. You can have your blood drawn any time of day. ### Which lab will process my Fibrinogen test? Your test will be processed by Quest Diagnostics, Labcorp, or BioReference depending on which is closest to you and which lab carries the test. All three are CLIA-certified and trusted by hospitals nationwide. You'll choose your lab during checkout from 4,000+ locations. ## Sources - [AACC Lab Tests Online](https://www.testing.com/tests/fibrinogen/) - [MedlinePlus (NIH) — Fibrinogen blood test](https://medlineplus.gov/ency/article/003650.htm) ## Related biomarkers - [Glucose](https://www.test-well.com/biomarkers/glucose) - [Creatinine](https://www.test-well.com/biomarkers/creatinine) - [eGFR](https://www.test-well.com/biomarkers/egfr) - [BUN](https://www.test-well.com/biomarkers/bun) - [ALT](https://www.test-well.com/biomarkers/alt) - [AST](https://www.test-well.com/biomarkers/ast) - [Reference range lookup tool](https://www.test-well.com/tools/reference-range-lookup) - [Lab unit converter](https://www.test-well.com/tools/lab-unit-converter) - [All biomarkers](https://www.test-well.com/biomarkers) --- Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-05. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/biomarkers/fibrinogen 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.