Ligand detection method and substituted carboxyfluorescein tracers therefor
申请人:ABBOTT LABORATORIES
公开号:EP0218010A2
公开(公告)日:1987-04-15
This disclosure relates to a method and reagents for determining ligands in biological fluids such as serum, plasma, spinal fluid, amnionic fluid and urine. This disclosure also relates to a novel class of tracer compounds employed as reagents in fluorescence polarization immunoassays.
Barbiturate assay, tracers, immunogens and antibodies
申请人:ABBOTT LABORATORIES
公开号:EP0373508A2
公开(公告)日:1990-06-20
The present invention is directed to a fluorescence polarization immunoassay for barbiturates, to the various components needed for preparing and carrying out such an assay, and to methods of making these components. Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for preparing them. The tracers and the immunogens are made from substituted barbiturate compounds. A fluorescein moiety is included in the tracer, while a poly(amino acid) forms a part of the immunogen. The assay is conducted by measuring the degree of polarization retention of plane-polarized light that has been passed through a sample containing antiserum and tracer.