The invention belongs to the technical field of immunodetection, and discloses a T3 sandwich method rabbit
monoclonal antibody mAb3 and application thereof. The T3 sandwich method
monoclonal antibody mAb3 provided by the invention comprises a light chain variable region and a
heavy chain variable region, the light chain variable region comprises LCDR1-3, the LCDR1 comprises an
amino acid sequence NIYNS, the LCDR2 comprises an
amino acid sequence YAS, and the LCDR3 comprises an
amino acid sequence QSHYGFSSSYGAA; the
heavy chain variable region comprises HCDR1-3, the HCDR1 comprises an amino acid sequence GFDVSYN, the HCDR2 comprises an amino acid sequence IDTGANA, and the HCDR3 comprises an amino acid sequence ARVFYDNSFDP. The
monoclonal antibody can be combined with a T3 compound in a high-specificity mode, is suitable for double-antibody sandwich immunodetection and is applied to an immunodetection kit prepared through a double-antibody sandwich ELISA or a
chemiluminescence method, a T3 standard
antigen is detected through a double-antibody sandwich
chemiluminescence platform, the detection sensitivity is lower than 0.3 ng / ml, clinical samples are detected through a magnetochemiluminescence method, and the detection sensitivity is lower than 0.3 ng / ml. In the sample range of 1-80 pmol / L, the correlation with clinical comparison is good.