Abstract: A novel blood collection instrument with which it is possible to prevent blood from coming into contact with air during collection of blood, and a blood collection plate that is suitably used therefor. A blood collection instrument including: a blood holding member having a structure in which a plurality of plate-shaped members, are overlapped with each other and including a collected blood holding passage formed between overlapped surfaces of the plate-shaped members; a connection part provided at an inflow port of the collected blood holding passage in the blood holding member; and a puncture member including a puncturing hollow needle while being connected to the connection part. An inner hole of the hollow needle of the puncture member is allowed to communicate with the collected blood holding passage in the blood holding member.

Abstract: A liquid collection-injection needle assembly is provided including a needle cap that accommodates and protects a needle, and that is designed to be used for other purposes as well, so that the needle cap is effectively used, and the number of parts required for assembly is reduced. The assembly includes a needle holding member that holds a needle after needle has been inserted into holding member, and a needle cap that is configured to be connected detachably to a front part of needle holding member, and to protect the exposed portion of needle that is exposed from the needle holding member after needle has been inserted into needle holding member. In the state where needle cap communicates with needle holding member, an end portion of the needle cap is capable of communicating with a rear part of needle holding member.