A direct, automated, immuno-turbidimetric assay of free protein S antigen in plasma

A new, fully automated, one-step, immuno-turbidimetric assay of free protein S (fPS) in plasma (STA®Liatest®Free Protein S; Diagnostica Stago, Asnieres, France) has been developed for STA®analysers. This technique combines the advantages of a direct assay of fPS using two monoclonal antibodies, whic