Patent ID: 8303914

Claim:
A closure assembly for a specimen collection container having an open end, an opposed closed end, and a side wall therebetween, defining a container interior, said closure assembly comprising: a bottom ring removably attachable to said open end of said container; and a top ring assembly removably attachable to said bottom ring when said bottom ring is attached to said container for closing said open end of said container, said top ring assembly including: a mounting ring removably attachable to said bottom ring, said mounting ring having an opening therein for communication with said container interior, said mounting ring comprising an annular projection extending around an outer circumference of the mounting ring adapted to engage a cooperative structure in said bottom ring in a snap fit arrangement so as to secure said mounting ring to said bottom ring in a fixed coaxial relationship; and a pierceable, resealable septum closing said opening and permitting pierceable instrument access therethrough.