Patent ID: 8858897

Claim:
A microfluidic chip for analyzing a fluid sample, having a channel structure comprising: a sample inlet that receives the fluid sample being fed into the microfluidic chip; a first reservoir that primarily stores the fluid sample therein; a second reservoir that secondarily stores the fluid sample therein when the fluid sample is received from the first reservoir; a first reaction portion arranged downstream of the second reservoir in which a target is conjugated with a label; a second reaction portion in which the labeled target undergoes an antigen-antibody reaction; and a delaying portion, located between the first and second reaction portions, that decreases a flow rate of the fluid sample wherein the first reaction portion, the second reaction portion, and the delaying portion comprise respective extension portions provided along a pair of inner sides thereof, wherein the delaying portion has a front portion having a slant side which becomes ascendant as it goes from the first reaction portion to the delay portion and a rear portion having a slant or vertical side connected to the second reaction portion.