Phlebotomist's utility rack with attachment features

A phlebotomist's rack, comprising:

• an upward-facing top surface in which are formed a plurality of upward-opening indentations dimensioned for receiving vacuum blood tubes,
• a plurality of said indentations being adapted to receive 35 mm vacuum tubes, a plurality of said indentations being adapted to receive 13 mm vacuum tubes, a plurality of said indentations being adapted to receive 11 mm vacuum tubes, and a plurality of said indentations being adapted to receive 17 mm vacuum tubes;
• a first side surface;
• at least one clamp projecting laterally from said side surface, said at least one clamp having vertically opposed upper and lower portions each extending horizontally and parallel to said side surface,
• said upper and lower portions being spaced apart, said upper and lower portions and a portion of said first side surface between said upper and lower portions forming a cylindrical receiving space and being reversibly and oppositely vertically deformable to open said at least one clamp to adapt said at least one clamp to clamping said first side surface to a bed-rail,
• said at least one clamp defining said receiving space to extend laterally along said side surface more than twice the diameter of said receiving space,
• the rack having a second side surface, substantially perpendicular to said first side surface,
• said second side surface having at least one horizontally-projecting, downward-pointed L-hook,
• said at least one L-hook projecting horizontally approximately 0.5 inch from said second side surface and then downwardly approximately 1 and 3/16 inches,
• said at least one clamp and said at least one L-hook cooperating to adapt the rack for stable mounting alternately on a bedrail and on a blood cart or tray.