The present invention is directed to a microfluidic
biochip based on an
agglutination reaction that is frequently used in qualitative
typing in the diagnostic
medicine field by realizing a specimen inlet, a
reagent inlet, a split microchannel, transfer microchannels, a chaos
micromixer, a reaction microchamber, a microfilter, a passive microvalve, and an outlet on a plastic microchip. Particularly, the
biochip of the present invention is characterized in that portability thereof is superior and a small amount (about 1 μl) of each of a specimen and a
reagent is used. In addition, the
biochip of the present invention can be cheaply made through conventional
photolithography,
electroplating, injection molding, and bonding. Therefore, by utilizing the microfluidic biochip for
blood typing according to the present invention, a point-of-care diagnosis for performing
blood typing based on an
agglutination reaction at any place becomes possible.