METHOD AND ANALYZER TO CORRECT FOR UNKNOWN INTERFERENCES IN A PATIENT BLOOD SAMPLE

    公开(公告)号:US20230221244A1

    公开(公告)日:2023-07-13

    申请号:US18000938

    申请日:2021-06-09

    IPC分类号: G01N21/31 G01N1/40 G01N33/49

    摘要: Analyzers and methods of use are disclosed, including a blood analyzer comprising a light source to transmit an optical signal; a detector to generate data indicative of optical signal intensity; a transparent sample vessel between the light source and the detector; a dispensing device to pass a first portion of the blood sample comprising whole blood or lysed blood into the vessel at a first instance of time, and to pass a plasma portion of the blood sample into the vessel at a second instance of time; a controller to cause a processor to obtain first and second data generated by the detector, the first data indicative of the optical signal passing through the first portion of the blood sample and the second data indicative of the optical signal passing through the plasma, to determine a total absorbance spectrum in which the first data is adjusted by the second data.

    METHOD FOR MEASURING BLOOD COAGULATION TIME
    85.
    发明公开

    公开(公告)号:US20230213497A1

    公开(公告)日:2023-07-06

    申请号:US17995682

    申请日:2021-04-07

    发明人: Toshiki KAWABE

    IPC分类号: G01N33/49

    CPC分类号: G01N33/4905

    摘要: Provided is a method for accurately measuring coagulation time of blood specimens showing various coagulation reactions. The method for measuring blood coagulation time includes acquiring coagulation reaction P(i) of a subject specimen and reaction velocity V(i); calculating a calculation start point Te by using the ratio of the V(i) to maximum reaction velocity as an index; and calculating time Tc giving P(Tc)=P(Te)×N % (0

    ANTIBODY FOR NEUTRALIZING SUBSTANCE HAVING COAGULATION FACTOR VIII (F.VIII) FUNCTION-SUBSTITUTING ACTIVITY

    公开(公告)号:US20230183376A1

    公开(公告)日:2023-06-15

    申请号:US17923997

    申请日:2021-05-21

    IPC分类号: C07K16/42 C12N15/63 G01N33/49

    摘要: Production was attempted for antibodies that neutralize the activity of a bispecific antibody having F.VIII function-substituting activity, for use in a method for measuring the reactivity of F.VIII in the presence of a bispecific antibody having F.VIII function-substituting activity. As a result, it was discovered that by using the produced antibodies, F.VIII activity in the plasma of a hemophilia A patient can be evaluated accurately by performing APTT-based one-stage clotting assay on a wide range of bispecific antibodies having F.VIII function-substituting activity. It was also discovered that F.VIII inhibitor titer in the plasma of a hemophilia A patient carrying F.VIII inhibitor can be evaluated accurately by APTT-based Bethesda assay.