This test measures the activity of Protein C, a natural anticoagulant that helps prevent excessive blood clotting. It works by inactivating specific clotting factors (Va and VIIIa) to keep the clotting process balanced.
Diagnostic Value: Low Protein C activity may indicate an inherited or acquired Protein C deficiency, which increases the risk of deep vein thrombosis (DVT) or pulmonary embolism (PE).
Clinical Significance: Testing is particularly useful in patients with unexplained or recurrent blood clots, or a family history of thrombophilia (clotting disorders).
Symptom Correlation: Individuals with Protein C deficiency may experience leg pain, swelling, or shortness of breath caused by blood clots.
The Protein C Activity test helps identify patients with a higher risk of abnormal clotting, allowing for early intervention and preventive care.