BLOOD COLLECTOR

A blood collector (1) has a cylindrical body (2) having a closed end (2a) and an open end (2b), and a hollow body (7) which is arranged at the closed end (2a) of the cylindrical body (2) and which has a hole (6) communicating with an interior of the cylindrical body (2). A columnar body (3) is arranged within the cylindrical body (2) to be in tight contact with an inner wall thereof and a distal end of which defines a blood collection space (5) with the closed end (2a) of the cylindrical body (2). Further, the columnar body (3) has a hole (10) which allows the blood collection space (5) to communicate with the outside. A freeze-dried blood anticoagulant mass (13) is placed inside the blood collection space to cover an inner surface of the closed end (2a) of the cylindrical body (2) and to block the hole (6) of the hollow body (7). A filter (11) is arranged to laterally cross the hole of the columnar body (3). The filter (11) is permeable to gases and impermeable to blood at least before being brought into contact with blood.