Free Protein S Activity Actual to Control Ratio Measurement

**Semantic type:** Laboratory Procedure

**Definition:** The determination of the ratio of the biological activity of free protein S 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:** - PTSFAAC - Protein S Free Activity Actual/Control - Protein S Free Activity Actual/Control - Protein S Free Activity Actual/Normal - Protein S Free Activity Actual/Protein S Free Activity Control