Magnetic micro-particles, method and apparatus for collecting specimens for use in labelling immune reactions, and method and device for preparing specimens.

摘要

A laser magnetic immunoassay method, in which a gradient magnetic field is applied to a solution containing a mixture of unreacted magnetic-labeled body, a specimen and a magnetic-labeled immunocomplex which is a complex between the specimen and the magnetic-labeled body after antigen-antibody reaction, and the magnetic-labeled immunocomplex in the solution is distinguished and measured in situ by means of difference in magnetophoretic ability between the unreacted magnetic-labeled body and immunocomplex. measured by radiating laser beam to the solution and receiving and analyzing output light. therefrom. Also, described are a laser magnetic immunoassay apparatus, comprising agradient magnetic field generating device for generating gradient magnetic field, and a magnetophoretic tube placed inside the slanting magnetic field generating device adapted to practice the laser magnetic immunoassay above., and a superparamagnetic-labeled body and a method for the manufacture thereof.