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Congenital protein C or S deficiency

  • Alternative Names

    Protein S deficiency; Protein C deficiency


    If you have this condition, you are more likely to develop blood clots. The symptoms are the same as for deep venous thrombosis, and include:

    • Pain or tenderness in the affected area
    • Redness or swelling in the affected area

    Signs and tests

    Laboratory tests will be done to check for proteins C and S. If you have this disorder, you will have a lack of protein C or S.

    Other tests that may be done include:

    • Bleeding time
    • Partial thromboplastin time
    • Prothrombin time
    • Thrombin time