Factor XII Deficiency

**Definition:** An absence or reduced level of blood coagulation factor XII. It normally occurs in the absence of patient or family history of hemorrhagic disorders and is marked by prolonged clotting time.

**Tree numbers:** - C15.378.100.100.330 - C15.378.100.141.330 - C15.378.463.330 - C16.320.099.330

**Synonyms:** - Deficiency, Factor Twelve - Factor Twelve Deficiency - Deficiency, Factor XII - Hageman Trait - Factor 12 Deficiency - Hageman Factor Deficiency - Deficiency, Factor 12 - Coagulation Factor 12 Deficiency