Patent ID: 8491499

Claim:
A system for sampling and pretreating biological fluid, comprising: a piercing unit having at a lower portion a capillary tip which is to be inserted into skin to a predetermined depth to take biological fluid therethrough; a dropper, connected to an upper portion of the piercing unit, having an injection tube at an upper portion thereof, the injection tube communicating with the capillary tip; and a reagent container, designed to accommodate the piercing unit therein in an airtight manner so as to seal an outer circumference of the piercing unit, for containing a reagent for treating the biological fluid of the capillary tip of the piercing unit; wherein the dropper is provided with a cylindrical member the outer circumference of which is adapted to be in airtight contact with an inner circumferential wall of the reagent container, and the reagent container is provided at an upper portion thereof with a sealing plate for closing the reagent container, which is designed to be readily perforated by the capillary tip of the piercing unit and to function to fill a gap between the dropper and the reagent container.