As a Blood Collection System Supplier, there is some information I want to tell you. The vacuum blood collection tube used for routine blood examination is a disposable vacuum negative blood collection tube. Don't underestimate such a small tube, the learning can be big.
The Vacuum Blood Collection Tubes are under negative pressure. Although the veins are lower than the blood pressure of the arteries, they also have some pressure. Once the blood vessel is destroyed, it can flow directly into the vacuum blood collection tube through negative pressure. This is a closed system. First of all, from a biosafety point of view, for the patient, it does not cause infection, and there is no outside air entering the blood vessels.
Vacuum Blood Collection Tubes
Looking closely at the vacuum blood collection tube, you will find some of the liquid inside, which is the result of many friends.
Of course, the vacuum blood collection needle, in the course of practice, also found that many patients will reflect that the tube is dirty and liquid. In fact, during the application process, there will be dry anticoagulants. The ingredient of this water is an anticoagulant that acts as anticoagulation.
Under normal circumstances, when the blood is at room temperature of 25 ° C, the coagulation time is 2.5-5.0 minutes, so the anticoagulant should be added to delay the blood clotting time.
Because everyone knows that blood routine must be anticoagulated. If it is solidified, it cannot be tested for blood components. The vacuum blood collection tube contains a little liquid. This liquid is an anticoagulant. It is commonly used as EDTA dimethyl, which is an anticoagulant. In addition to ensuring that blood does not coagulate, it has one of the most important functions, which is to have a very good protective effect on the composition of blood, especially the morphology of cells, and the morphology of platelets. This is also an internationally recommended anticoagulation. Agent selection.
Standard blood collection tubes use internationally used headcovers and labels. Different colors indicate different additive types and test uses. Let's take a look at the common vacuum blood collection tubes.
Red: dry vacuum tube
The most commonly used test tube for serum biochemistry and immunological detection at the time of blood collection, the inner wall is evenly coated with silicone oil to prevent wall hanging and the blood is coagulated by the principle of natural coagulation of blood, and can be centrifuged after the serum is precipitated.
Golden yellow: inert separation gel
Commonly used for detection of thyroid function, tumor markers, PCR and hormone levels. It is highly praised for its stability, which is based on the addition of an inert separation gel that acts as a barrier to the condensation tube. This separation gel completely separates the liquid component (serum) and solid components (blood cells) in the blood after centrifugation and completely accumulates in the center of the test tube to form a barrier, and remains stable for 48 hours. It should be noted that the blood should be mixed immediately after the blood collection and allowed to stand for 30 minutes.
Orange: Condensation tube
Mostly used in emergency biochemical tests, due to the addition of a coagulant that activates fibrin, the soluble fibrin becomes insoluble fibrin polymer, which forms a stable fibrin clot, which is usually allowed to stand for 5 minutes after blood collection. The blood is coagulated and can be detected by centrifugation.
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Pulished on Apr. 03, 2020
Pulished on Mar. 24, 2020