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85306 Clot inhibit prot s free

Pathology & Lab

Also known as: free protein S, protein S free antigen

Measurement of free protein S antigen in plasma using immunoassay to quantify unbound (free) protein S fraction with functional anticoagulant activity.

Clinical Context

More specific than total protein S for thrombophilia evaluation; low free protein S increases thrombotic risk and warrants anticoagulation in some cases.

RVU Breakdown

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Specialties

Clinical PathologyCoagulationHematology

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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.