Factor Va

**Definition:** Activated form of factor V. It is an essential cofactor for the activation of prothrombin catalyzed by factor Xa.

**Tree numbers:** - D12.776.124.125.300.300 - D23.119.300.300

**Synonyms:** - Coagulation Factor Va - Factor Five A - Blood Coagulation Factor V, Activated - Factor V, Activated - Factor 5A