Abstract: An arrangement is provided for inducing rapid flow of a blood sample into a collection assembly for the sample, with the arrangement including an elongated member of narrow width positioned in the flow path of the blood from the source therefore to the collection area therefore. The member of the invention may be, for example, an elongated flat strip, flexible or rigid, a solid rod, a solid strip square in cross section, or a tubular rod. The elongated device may be separate and positioned or adhered to a surface forming the blood flow path or it may be molded simultaneously with a collection assembly. The device may serve to provide a bridging transition from the surface of one part of an assembly to another. Finally, the device may be used to induce sample flow back and forth in a collection tube during mixing.

Abstract: An arrangement is provided for inducing rapid flow of a blood sample into a collection assembly for the sample, with the arrangement including an elongated member of narrow width positioned in the flow path of the blood from the source therefore to the collection area therefore. The member of the invention may be, for example, an elongated flat strip, flexible or rigid, a solid rod, a solid strip square in cross section, or a tubular rod. The elongated device may be separate and positioned or adhered to a surface forming the blood flow path or it may be molded simultaneously with a collection assembly. The device may serve to provide a bridging transition from the surface of one part of an assembly to another. Finally, the device may be used to induce sample flow back and forth in a collection tube during mixing.

Abstract: A cap is provided for a blood microcollection container which cap incorporates a partially open tubular and tapered scoop arrangement for engaging a puncture wound, and rapidly receiving blood from the wound. Longitudinally extending ribs serve to define and maintain a blood flow and an air venting passage in the collector, while preventing blood "hang-up" caused by capillary action in the blood flow passage of the collector. With this invention, the time of transfer is reduced substantially because less precise positioning is required of the scoop, and blood "hang-up" in the transfer passage is avoided.