| CPC B01L 3/50825 (2013.01) [B01L 2200/16 (2013.01); B01L 2300/044 (2013.01); B01L 2300/0681 (2013.01); B01L 2300/1883 (2013.01); B01L 2400/049 (2013.01)] | 7 Claims |
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1. A blood collection apparatus comprising:
a test tube element for storing blood extracted from a patient, the test tube element comprising a vacuum facilitating an extraction of the blood, and comprising a test tube septum;
an anticoagulate additive, within the test tube element, and being encased by a soluble film provided on an inner wall of the test tube element, wherein exposure of the soluble film to extracted blood dissolves the soluble film, causing the anticoagulate additive to become available to react with the blood extracted from a patient after the soluble film has been dissolved; and
an additive blocking element incorporated into the test tube septum, wherein the additive blocking element is a continuous cylindrical solid with a uniform outer diameter along an entire length thereof and a recessed portion on an end thereof, the additive blocking element is moveable by a user from the test tube septum towards the extracted blood within the test tube element, wherein the additive blocking element contacts the soluble film on the inner wall of the test tube element and blocks the extracted blood from dissolving a portion of the soluble film thereby limiting the amount of additive applied to the extracted blood, limiting the free surface of the blood, and thereby limiting the sloshing of the extracted blood within the test tube.
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