Do you know how to choose a vacuum blood collection tube? The Blood Collection Needle Factory has the following recommendations:
1. Silicidation quality of vacuum blood collection tubes
There are many types of silicone oils used for the treatment of the inner wall of test tubes. They are soluble in water and insoluble in water. They are soluble in organic solutions and insoluble in organic solutions. The viscosity is very simple and active liquid and semi-solid liquid. In the meantime, it is not easy to choose a silicone oil that is suitable for the inner wall of a vacuum blood collection tube. It has excellent chemical laziness and physiological laziness. The test tube with better silicidation treatment should have a very lubricated inner wall. After a brief water test, it is possible to distinguish the quality of the inner wall of the test tube. 2 ml of water was placed in a test tube and then poured out, and the inner wall of the siliconized and treated test tube was left with no small droplets of water remaining. It is conceivable that a vacuum tube without the appearance of blood cells has now laid an outstanding foundation for the separation of high-quality serum.
2. The effect of increased uniformity of EDTA-K2 on blood routine outcomes
Because glass tubes are very dangerous in terms of safety performance, it is a trend to use special plastic PET tubes instead of glass tubes. Because PET tubes have outstanding hydrophobicity, it greatly increases the difficulty of producing vacuum tubes. It is well known that when a liquid EDTA-K2 solution is added to a PET tube, the liquid EDTA-K2 will form a block at the bottom of the tube, at the nozzle or other parts due to some loss of moisture after a period of time due to the hydrophobicity of the PET tube. Crystallization causes its solubility to drop greatly. The large EDTA-K2 crystal can not be touched with blood and dissolved in blood specimens in a short time, so that platelet aggregation is simple, white blood cell classification results are not ambivalent, and even blood samples are somewhat condensed. The optimal concentration of the selected EDTA-K2 anticoagulant for whole blood cell analysis is 1.5-2.2 mg/1 ml whole blood. If the concentration of EDTA-K2 is too low and the anticoagulation intensity is not good, it will show the appearance of platelet aggregation; the concentration of EDTA-K2 is too high, especially when there is a large amount of EDTA-K2 crystal, which makes some blood cells in hyperosmotic condition, here The cells will be temporarily shortened, which will lead to unambiguous white blood cell classification results. In order to avoid the crystal appearance formed by the loss of water, an ambition blood routine vacuum blood collection tube, EDTA-K2 crystal should be very finely and evenly spread on the inner wall of the test tube. In this way, once the blood enters the test tube, the evenly dispersed EDTA-K2 can quickly mix with the blood, and then eliminate the abnormal appearance of blood routine results due to the cause of Vacutainer.
3. Avoid liquid mildew in vacuum blood collection tubes
The sodium citrate anticoagulant tube used for blood coagulation and erythrocyte sedimentation has a high demand for the environment and the water used for dissolution. If the process and production environment are not proper, or the purity of the dissolved water used does not reach the demand, etc., the produced product will have floccules (long mold) in the test tube after a period of time, and then form The results of the inspection were distorted. Because PET tubes are very hydrophobic, such tubes are not specially packaged and are claimed to be used up within three months.
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Pulished on Jun. 24, 2020
Pulished on Jun. 16, 2020