An assembly for collecting blood or other body fluids is provided. The assembly includes an elongate tube having an open end and a closed end. The open end includes threads. An internally threaded plastic cap is mounted to the open end of the tube. The cap includes an axial passage and a resealable member...http://www.google.com/patents/US6017317?utm_source=gb-gplus-sharePatent US6017317 - Assembly for collecting blood or other body fluids