Protein C is a natural anticoagulant protein made by the liver that helps prevent excessive blood clotting. This test measures the functional activity of protein C in your blood.
Category: Coagulation
Also known as: protein c activity, protein c, protein c functional, protein c %
Reference range: 70–140 % (Source: ABIM)
Standard unit: %
High values may indicate
High protein C activity levels are generally not clinically significant and are rarely a cause for concern.
Low values may indicate
Low protein C activity may indicate an increased risk of blood clots (deep vein thrombosis, pulmonary embolism), liver disease, disseminated intravascular coagulation (DIC), vitamin K deficiency, or a hereditary protein C deficiency.