Patent ID: 8796017

Claim:
A serum preparation apparatus for preparing a serum for cell culture from a fluid including platelets and humoral components including a coagulation factor from blood, comprising: a blood reservoir bag which stores the fluid and has a volume in the range of 5 ml to 1000 ml; a spherical blood coagulation accelerating substance contained in the inner portion of the blood reservoir bag, wherein said spherical blood coagulation accelerating substance exhibits a total surface area of 0.1 mm 2 to 25 mm 2 per 1 ml of fluid stored in the blood reservoir bag; a component storage bag which contains at least some components of the fluid stored in the blood reservoir bag; and a tube formed of a meltable and flexible resin material, which connects the blood reservoir bag and the component storage bag aseptically and in an air-tight manner; wherein an inner diameter of the tube is smaller than an outer diameter of the spherical blood coagulation accelerating substance.