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Table 1 Plasma factors influencing the thrombophilic propensity

From: Stent thrombosis caused by metal allergy complicated by protein S deficiency and heparin-induced thrombocytopenia: a case report and review of the literature

Test Values (percent) Normal range (percent)
Total protein S antigen 56 65–135
Free protein S antigen 50 60–150
Protein S activity 35 60–150
Protein C activity 89 64–146
Anti-thrombin III activity 95 80–130
Factor X 81 70–130