Additives For Purple Cap Vacuum Blood Collection Tubes And Principle Of Action

It is believed that many people have been exposed to purple test tubes during the process of blood extraction. Maybe they didn't care at that time. They just felt that the test tubes placed in front of the window of the laboratory were used for blood extraction. But careful observation will reveal that each kind of test tube is different in size and color. Why? In fact, this is inseparable from additives, such as serum gel, EDTA potassium salt, heparin sodium, heparin lithium or sodium citrate. The addition of these additives makes the color of test tubes different, which also means that the test items are different. In the blood collection experiment, the purple test tube is very important, and also uses more test tubes. So let's focus on it first.

EDTA K2 powder

1, Additives in purple blood tube

The purple blood collecting vessel is also called purple EDTA anticoagulant tube. The reagent added in the tube is the anticoagulant EDTA K2. Because of its characteristic of chelating blood calcium, it can achieve the purpose of preventing blood coagulation, and is suitable for routine hematological examination. However, because it is an anticoagulant reagent, it is not suitable for coagulation test and platelet function test.

EDTA K2 parameters:

2, How EDTA K2 works

EDTA K2 is added to the purple blood collection vessel. Its main principle is that it has chelating force and can form a stable complex with calcium ions in the blood to achieve the purpose of blood coagulation. In this way, it can be fully used to complete the whole blood or plasma detection, which can not only improve the detection efficiency, but also ensure the accuracy of the detection results.

3, Add EDTA K2 to purple tube

Because EDTA K2 produced by most suppliers is white powder and soluble in water, it can be added only after EDTA K2 powder is completely dissolved and up to standard before being added to the purple tube. In addition, it is necessary to ensure sufficient anticoagulation time during use. If the anticoagulation time is not enough, the result deviation will easily occur during the detection process. At the same time, after collecting blood samples, the operator should pay attention to rotating the test tube in time, so as to achieve the best anticoagulation effect.

As a manufacturer specializing in the production of EDTA K2 in China, Desheng has signed contracts with a number of test tube manufacturers in China to supply goods for a long time. Due to the establishment of an independent warehouse inside the factory, there are a large number of goods in stock for customers to pick up and order, and the delivery date will not be delayed. If you have relevant EDTA K2 requirements, please click the website or call for details!