Anti-Hemophilia Factor Unit

**Semantic type:** Quantitative Concept

**Definition:** One international unit of antihemophilic activity is equivalent to the quantity of antihemophilic factor (Factor VIII) present in 1 mL of normal human plasma.

**Synonyms:** - AHF U - AHF Unit - Anti-Hemophilic Factor Unit - FVIII Unit - Factor VIII Unit