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  • Title: Laser nephelometer evaluation of factor IX.
    Author: Ruzza G, Lazzaro AR, Viero ML, Girolami A.
    Journal: Folia Haematol Int Mag Klin Morphol Blutforsch; 1990; 117(6):843-9. PubMed ID: 1713891.
    Abstract:
    Laser Nephelometry is a technique which allows the evaluation of the concentration of several serum proteins and clotting factors. By means of this technique it is also possible to study the kinetic of the reaction between antigen and antibody. In a few instances the method was also applied in the characterization of abnormal molecules. We developed assays for the measurement of Factor IX antigen and the results were compared with those obtained by conventional immunological methods such as rocket immunoelectrophoresis. Plasmas from patients with haemophilia B, on coumarin treatment, with liver cirrhosis were studied. A standard reference curve was obtained using pooled normal plasma. The factor IX levels obtained by laser nephelometer correlated fairly well with those obtained by electroimmunoassay.
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