Antithrombin Activity Actual to Control Ratio Measurement

**Semantic type:** Laboratory Procedure

**Definition:** The determination of the ratio of the biological activity of antithrombin in a subject's specimen when compared to the same activity in a control specimen. The measurement may be expressed as a ratio or percentage.

**Synonyms:** - ATHMBAAC - Antithrombin Activity Actual/Antithrombin Activity Control - Antithrombin Activity Actual/Control - Antithrombin Activity Actual/Control - Antithrombin Activity Actual/Normal