Fibrinogen

Fibrinogen, also known as Plasma Fibrinogen or Gerinnungsfaktor I, is a glycoprotein that plays a critical role in blood coagulation. It is synthesized by the liver and circulates in the plasma. Upon vascular injury, fibrinogen is converted by thrombin into fibrin, which forms a mesh that stabilizes the blood clot. Researchers have found that fibrinogen levels can reflect the body's inflammatory status, as it is an acute-phase reactant that increases in response to inflammation. Clinically, elevated fibrinogen levels are associated with an increased risk of cardiovascular diseases, such as myocardial infarction and stroke, as well as conditions like deep vein thrombosis and disseminated intravascular coagulation (DIC). Conversely, low fibrinogen levels can indicate liver disease, disseminated intravascular coagulation, or congenital fibrinogen deficiencies, which may lead to bleeding disorders. In the context of athletic performance and biohacking, fibrinogen is of interest due to its role in inflammation and clot formation. Athletes may monitor fibrinogen levels to assess recovery and inflammation status. For longevity, maintaining optimal fibrinogen levels may be beneficial in reducing cardiovascular risk. However, researchers observed that fibrinogen levels can be influenced by various factors, including acute infections, stress, and hormonal changes. Time of day and fasting status do not significantly affect fibrinogen levels, but acute physical stress or recent surgery can temporarily alter results. Therefore, it is crucial to consider these factors when interpreting fibrinogen levels.