Fluid sample container cap

A cap for a fluid sample container, the cap comprising:

• (a) a top portion having a top opening and a top connective structure;
• (b) a bottom portion having a bottom opening and a bottom connective structure;
• wherein the top portion is connected to the bottom portion by the top connective structure being connected to the bottom connective structure and the bottom portion is moveable relative the top portion to (i) a position at which the top opening and bottom opening align and the cap is configured to permit the passage of fluid therethrough, and (ii) a position at which the top opening and bottom opening are not aligned and the cap is configured to not permit the passage of fluid therethrough;
• wherein the cap is moveable from (a) a first position at which the top opening and the bottom opening are not aligned and the cap is not configured to permit the passage of fluid therethrough, to (b) a second position at which the top opening and the bottom opening are aligned and the cap is configured to permit the passage of fluid therethrough, and to (c) a third permanently locked position at which the top opening and bottom opening are not aligned and the cap is configured to prevent the passage of fluid therethrough, wherein the third position is different from the first position and the cap is not movable back to the second position.