The invention relates to a 
Galectin-3 detection nanometer 
magnetic bead sorting-time resolved 
immunofluorescence kit, which comprises superparamagnetic composite micro-particles with a particle size of 30 nm, a 
coupling liquid, a blocking solution, a washing liquid, a loading buffer, a 
fluorescence enhancement solution, a detection buffer, a 
capture antibody, a detection 
antibody, Eu<3+> labeled 
streptavidin and a standard substance. The use of the kit comprises: adopting nanometer 
magnetic bead sorting and time resolved 
immunofluorescence adopting a 
double antibody sandwich method as the base to detect the concentration of 
Galectin-3 
protein in a sample, adopting nanometer magnetic beads coupled with the 
Galectin-3 
capture antibody to enrich the Galectin-3 in the sample, adding the detection 
antibody, incubating, washing, adding the Eu<3+> labeled 
streptavidin, incubating, washing again, adding the 
fluorescence enhancement solution, vibrating for 5 min, adopting light with a 
wavelength of 337 nm to excite, delaying for 200 microseconds, detecting the emitted 
fluorescence value at a 
wavelength of 615 nm, and obtaining the concentration of the Galectin-3 in the sample to be detected through the fluorescence value and the corresponding 
standard curve, wherein the sample to be detected can further be used for detecting the next 
target protein.