A blood sampling cartridge comprising: a container (20) having a distal end (22), a proximal end (23), and a side wall (25) extending between them and defining the interior (26) of the container； a resealable closure (40) that seals the distal end (22) of the container (20), the resealable closure (40) having a distal end (41) of closure and a proximal end (42) of closure； a stopper (60) sealing the proximal end (23) of the container (20), the stopper (60) having a distal end of the stopper and a proximal end of the stopper； a stop (32) slidably disposed in the interior (26) of the container (20), the stop (32) being sized with respect to the container (20) to provide a tight coupling with the side wall (25) of the container ( 20), the stop (32) having a distal end (34) of stop and a proximal end (35) of stop； a first fluid reservoir (28) located within the side wall (25) between the proximal end (42) of closure and the distal end (34) of the stop； and a second fluid reservoir (38) located within the side wall (25) between the distal end of the cap and the proximal end (35) of the stop characterized in that the cap (60) is rotatable between a closed position, in the that the cap (60) seals the proximal end (23) of the container (20), and an open position, in which the cap (60) breaks the seal with the proximal end (23) of the container (60), allowing the air inside the vessel (26) is evacuated.Un cartucho de toma de muestras de sangre que comprende: un recipiente (20) que tiene un extremo distal (22), un extremo proximal (23), y una pared lateral (25) que se extiende entre los mismos y que definen el interior (26) del recipiente； un cierre resellable (40) que sella el extremo distal (22) del recipiente (20), teniendo el cierre resellable (40) un extremo distal (41) de cierre y un extremo proximal (42) de cierre； un tapón (60) que sella el extremo proximal (23) del recipiente (20), teniendo el tapón (60) un extremo distal de tapón y un extremo proximal de tapón； un t
