### What is a Fibrinogen Blood Test? A fibrinogen blood test measures the level of fibrinogen, a protein produced by the liver that is essential for blood clotting. This test helps to assess how well fibrinogen is performing in your blood. ### Why is it Needed? Doctors recommend this test if they suspect you have a bleeding disorder or a blood clot. It can also indicate the risk of heart disease and stroke, as high fibrinogen levels are associated with these conditions. ### How is the Test Performed? 1. **Preparation**: You may need to stop certain medications before the test. Inform your healthcare provider about all medications, vitamins, and supplements you are taking. 2. **Blood Sample**: A blood sample is drawn from a vein in your arm using a needle. The process is quick and usually painless, though you might feel a slight prick. 3. **Aftercare**: You may feel lightheaded or have minor bruising at the site, but these symptoms typically go away in a few days. ### Understanding the Results - **Normal Levels**: 200-400 mg/dL - **High Levels**: Over 700 mg/dL, indicating a higher risk of blood clots, infections, inflammation, and other conditions. - **Low Levels**: Below 50 mg/dL, indicating a higher risk of excessive bleeding and potential liver disease or malnutrition.