A syringe comprising: a barrel (150, 250, 350) including a sidewall having an inside surface defining a chamber (155, 255, 355) for retaining fluid, an open proximal end and a distal end (151, 251, 351) including a distal wall (152, 252, 352) having a luer tip (134, 234, 334) with an opening (136, 236, 336) therethrough in fluid communication with said chamber (155, 255, 355); a collar (130, 230, 330) extending from the distal wall (152, 252, 352), the collar (139, 239, 339)in a coaxial relationship with the luer tip (134, 234, 334) defining a channel (132, 232, 332) for receiving a needle hub (120, 220, 320) therein, and the collar (130, 230, 330) includes a peripheral gap (138, 238, 338); a rotatable arm (140, 240, 340) projecting into the peripheral gap extending from the collar (130, 230, 330) including a pivot portion (146, 246, 346), a latch (142, 242, 342) extending radially inwardly from the pivot portion (146, 246, 346) for engagement with a portion of the needle hub (134, 234, 334) and an extending lip (124, 224, 324) engaging the peripheral gap on the needle hub (120, 220, 320) to permit assembly of the needle hub (120, 220, 320) and the collar (130, 230, 330) in a snap-fit relationship without relative rotation between the needle hub (120, 220, 320) and the barrel (150, 250, 350); and wherein upon engagement of the extending lip (124, 224, 324) of the needle hub (120, 220, 320) into the channel (132, 232, 332), the latch (142, 242, 342) of the rotatable arm (140, 240, 340) engages the portion of the needle hub (134, 234, 334); and an elongate plunger rod (180, 280, 380) including a proximal end (189, 289, 389), a distal end (191, 291, 391) having a stopper (169, 269, 369) and an end wall, the stopper (169, 269, 369) in a fluid-tight engagement with the inside surface of the barrel (150, 250, 350), and a main body (182, 282, 382) extending between the proximal and distal end (189, 289, 389; 191, 291, 391), the plunger rod (180, 280, 380) being distally and proximally movable within said chamber (155, 255, 355). a barrel (150, 250, 350) including a sidewall having an inside surface defining a chamber (155, 255, 355) for retaining fluid, an open proximal end and a distal end (151, 251, 351) including a distal wall (152, 252, 352) having a luer tip (134, 234, 334) with an opening (136, 236, 336) therethrough in fluid communication with said chamber (155, 255, 355); a collar (130, 230, 330) extending from the distal wall (152, 252, 352), the collar (139, 239, 339)in a coaxial relationship with the luer tip (134, 234, 334) defining a channel (132, 232, 332) for receiving a needle hub (120, 220, 320) therein, and the collar (130, 230, 330) includes a peripheral gap (138, 238, 338); a rotatable arm (140, 240, 340) projecting into the peripheral gap extending from the collar (130, 230, 330) including a pivot portion (146, 246, 346), a latch (142, 242, 342) extending radially inwardly from the pivot portion (146, 246, 346) for engagement with a portion of the needle hub (134, 234, 334) and an extending lip (124, 224, 324) engaging the peripheral gap on the needle hub (120, 220, 320) to permit assembly of the needle hub (120, 220, 320) and the collar (130, 230, 330) in a snap-fit relationship without relative rotation between the needle hub (120, 220, 320) and the barrel (150, 250, 350); and wherein upon engagement of the extending lip (124, 224, 324) of the needle hub (120, 220, 320) into the channel (132, 232, 332), the latch (142, 242, 342) of the rotatable arm (140, 240, 340) engages the portion of the needle hub (134, 234, 334); and an elongate plunger rod (180, 280, 380) including a proximal end (189, 289, 389), a distal end (191, 291, 391) having a stopper (169, 269, 369) and an end wall, the stopper (169, 269, 369) in a fluid-tight engagement with the inside surface of the barrel (150, 250, 350), and a main body (182, 282, 382) extending between the proximal and distal end (189, 289, 389; 191, 291, 391), the plunger rod (180, 280, 380) being distally and proximally movable within said chamber (155, 255, 355).