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Views: 0 Author: Site Editor Publish Time: 2025-03-12 Origin: Site
Vacuum blood collection tubes are also called negative pressure blood collection tubes. The principle is to pre-pump the blood collection tubes with caps to different vacuum degrees, and use the negative pressure to automatically and quantitatively collect venous blood samples.
The red safety cap indicates that this kind of blood collection tube does not add any additives and attachments to the test tube, and the inner wall is extremely smooth after special treatment, which can effectively prevent blood cells from adhering to the wall and minimize hemolysis of the specimen in vitro. Keep the original shape of the blood to make the detection result more accurate.
Uses: Used for the collection and storage of blood samples in clinical medical tests such as biochemistry, immunity, and serum.
Color code: red
Evenly coating the promoting gel on the inner wall can greatly shorten the blood coagulation time. The separating gel is a pure substance, and its physical and chemical substances are relatively stable. After centrifugation, it solidifies to form a barrier, completely separates the serum and blood cells, and effectively prevents the material exchange between the two, to ensure the purity of serum.
Uses: Used to obtain high-quality serum samples in clinical medical tests such as biochemistry, immunity, and serum.
Color code: yellow
The orange safety cap indicates that a coagulant is added to this type of blood collection tube, which is extremely smooth, and the inner wall is sprayed with a coagulant to completely coagulate the blood within 5-8 minutes. No need for any heating equipment (such as a water temperature tank, etc.)
Uses: It is used for the collection of blood samples that require rapid blood sampling in biochemical, immune, and other clinical medical tests.
Color code: orange
The blue safety cap indicates that 0.109mol/L sodium citrate is added to this type of blood collection tube, and the ratio of anticoagulant to blood sample is set at 1:9. The ratio is accurate and the validity of the testing effect is guaranteed. The sodium citrate buffer system anticoagulated blood samples, which can effectively chelate calcium ions in blood samples and prevent blood samples from coagulating.
Uses: Used for the inspection of blood coagulation items.
Color code: blue
The green safety cap indicates that the additives in this type of blood collection tube are heparin sodium and heparin lithium; so that they are evenly distributed on the tube wall.
Uses: Used for the collection and anticoagulation of blood samples in clinical biochemistry and emergency biochemical tests (hemorheology, biochemistry, genetic diagnosis, enzymology, enzyme immunoassay, etc.)
Color code: green
Gray safety caps indicate that this blood collection tube additive has sodium fluoride + potassium oxalate. Sodium fluoride has an excellent effect of inhibiting red blood cells from glycolysis of blood sugar.
Uses: It is used for the determination of clinical blood sugar levels; and can maintain the original properties of blood samples for a long time. Effectively prevent blood sugar metabolism and ensure blood sugar detection data is constant within 72 hours.
Color code: gray
The white safety cap indicates that the anticoagulant EDTA.K2 and separation gel are added to this type of blood collection tube, and after special treatment, it is fully mixed with the blood sample for nucleic acid detection.
Color code: white
The purple safety cap indicates that EDTA salt is added to this type of blood collection tube, which is evenly distributed on the tube wall. The use of ethylenediaminetetraacetic acid, which is recommended by the International Blood Committee, has higher anticoagulant efficiency, stronger stability, and a pH value that is relatively close to that of blood Dipotassium (EDTK-K2), can effectively chelate calcium ions in blood samples, prevent blood samples from coagulating, and effectively maintain the stability of platelets.
Uses: Used for clinical hematology tests, such as blood routine, etc.; suitable for various blood cell analyses (such as blood cell morphology, blood cell count, hematocrit, hemoglobin, sickle test, etc.)
Color code: purple
It is specially used for the collection and anticoagulation of blood samples during the determination of erythrocyte sedimentation rate by Wei's Erythrocyte Sedimentation Method. The additive is sodium citrate, and the ratio of anticoagulant to blood volume is 1:4.
Uses: suitable for detection of blood sedimentation rate
Color code: black
It is used in conjunction with various brands of automatic erythrocyte sedimentation instruments. Due to the small amount of blood collected, the negative pressure in the tube is small, and the blood drawing time is relatively long. Wait patiently until the blood stops flowing into the blood collection tube and mix 5-8 times to fully mix the anticoagulant and blood.
Color code: black
