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Bleeding and Clotting Disorders

Protein S antigen

03/11/2008

Question:

what does a protien s antigen elevation combined with a protien activy decrease mean?

Answer:

Your description of PS does not fit the usual definition so I am afraid I cannot answer your question.

Only free PS is active. Three subtypes of PS deficiency are recognized:

(De Stefano et al, 1996).

For more information:

Go to the Bleeding and Clotting Disorders health topic, where you can:

Response by:

Eric H Kraut, MD Eric H Kraut, MD
Professor of Hematology
College of Medicine
The Ohio State University