Views:1 Author:Site Editor Publish Time: 2021-08-16 Origin:Site
When the blood collection needle enters the blood vessel, the blood actively flows into the micro collecting vessel due to the negative pressure effect in the collecting vessel; Various additives are preset in a micro collecting vessel, which can completely satisfy a number of clinical summarized blood tests, safe, closed and convenient transportation. Dry empty pipe without additives: the inner wall of micro collecting vessel is evenly coated with agents (silicone oil) to avoid wall hanging.
It uses the principle of natural blood coagulation to coagulate the blood. After the serum is naturally separated, it is centrifuged. Mainly used for serum biochemistry (liver function, kidney function, myocardial enzymes, amylase, etc.), electrolytes (serum potassium, sodium, chlorine, calcium, phosphorus, etc.), thyroid function, drug detection, AIDS detection, tumor markers, serum immunology. Coagulation accelerating tube: the inner wall of the blood collecting tube is evenly coated with silicone oil to avoid hanging on the wall, and coagulant is added together. Coagulant can activate fibrin, make soluble fibrin become insoluble fibrin polymer, and then form a stable fibrin clot. If you want to produce results quickly, you can use a coagulant tube.
It is generally used for emergency biochemistry. collecting vessel rich in separation gel and coagulant: the pipe wall is silicified and coated with coagulant, which can accelerate the coagulation of blood and shorten the inspection time. Separation glue is added in the tube. The separation glue has excellent affinity with the pet tube and does play a barrier effect. Generally, even on the general centrifuge, the separation glue can completely separate the liquid components (serum) and solid components (blood cells) in the blood and accumulate in the test tube to form a barrier.
After centrifugation, no oil droplets are produced in the serum, so the machine will not be blocked. Mainly used for serum biochemistry (liver function, kidney function, myocardial enzymes, amylase, etc.), electrolytes (serum potassium, sodium, chlorine, calcium, phosphorus, etc.), thyroid function, drug detection, AIDS detection, tumor markers, serum immunology. collecting vessel rich in anticoagulants in the tube: 1) collecting vessel rich in heparin sodium or heparin lithium:
Heparin is a mucopolysaccharide rich in sulfate groups, with strong negative charge. It has the effect of strengthening the inactivation of serine protease by antithrombin III, then hindering the composition of thrombin, and hindering platelet aggregation and other anticoagulant effects. Heparin tube is generally used for the detection of emergency biochemistry and hemorheology. It is the selection of electrolyte detection. When checking the sodium ion in blood samples, heparin sodium cannot be used to avoid affecting the detection results.
It can not be used for leukocyte counting and classification, because heparin will cause leukocyte collection. 2) Blood collection vessel rich in ethylenediamine tetraacetic acid and its salt (EDTA -): ethylenediamine tetraacetic acid is an amino polycarboxylic acid, which can effectively chelate calcium ions in the blood. Chelating calcium will remove calcium from the reaction point, hinder and stop the endogenous or exogenous coagulation process, and then avoid blood coagulation. Compared with other anticoagulants, It has little effect on the coagulation of blood cells and the shape of blood cells, so EDTA salts (2k, 3k, 2Na) are generally used as anticoagulants.