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The Classification Of Vacutainer Needle Holder
Mar 18, 2018

It has nine species, which are distinguished according to the color of the hat.

1. Common serum tubule red head cover, blood vessels without additives, used for routine serum biochemistry, blood bank and serological tests.

2. Rapid serum tube orange head cover, with coagulant in the blood collection tube, accelerating the coagulation process. The rapid serotube can coagulate the collected blood in 5 minutes, which is suitable for the series test of emergency serum.

3. Inert separation gel is used to promote the golden head cover, and there is an inert separation glue and a coagulant in the blood collection tube. Specimens after centrifugal inertia separation of glue to the fluid composition in the blood, serum or plasma) and solids (red blood cells, white blood cells, platelets, and fibrin, etc.) completely separate and accumulation in the middle of the tube to form a barrier, the specimen is stable within 48 hours. Coagulant can quickly activate coagulation mechanism and accelerate coagulation process, which is suitable for emergency serum biochemical test.

4. Heparin anti-coagulant tube green head cover, with heparin in the blood collection tube. Heparin has direct anticoagulant effect and can prolong the blood clotting time. It is suitable for erythrocyte brittleness test, blood gas analysis, hematocrit test, blood sedimentation and probiosis test, not suitable for blood coagulation test. Excessive heparin can cause leukocyte aggregation, and cannot be used in white blood cell counts. It is not suitable for the classification of white blood cells because it can make the background light blue after dyeing.

5. Plasma separation tube light green epicranium, within the inertia separation hose join lithium heparin anticoagulant, can achieve the goal of fast separation of plasma, is the best choice of the electrolyte detection, can also be used for routine blood biochemical assay and ICU emergency plasma biochemical detection, etc. The plasma specimen can be directly mounted and kept stable for 48 hours under refrigeration.

6. EDTA anticoagulant tube purple epicranium, ethylenediamine tetraacetic acid (EDTA, molecular weight 292) amino carboxylic acid and its salt is a kind of, can effectively chelate calcium ions in the blood specimen, chelating calcium or calcium reaction sites will be moved to block and termination of endogenous or exogenous coagulation process, so as to prevent blood clotting specimens. Applied to general hematology inspection, not to coagulation tests and platelet function examination, also does not apply to calcium, potassium, sodium, iron, alkaline phosphatase, and the determination of creatine kinase and leucine aminopeptidase, suitable for PCR test.

7. Sodium citrate coagulation test tube light blue head cap, sodium citrate is mainly used to anticoagulate with calcium ion in blood sample. Apply to the coagulation experiment, in the country order laboratory standardization committee (national committee for clinical laboratory standards, NCCLS) recommended by the anticoagulant concentration is 3.2% or 3.8% (equivalent to 0.109 mol/L or 0.129 mol/L), anticoagulants and blood ratio of 1:9.

8. Sodium citrate blood sedimentation test tube black cranium, the concentration of sodium citrate required by the blood sedimentation test is 3.2%(equivalent to 0.109mol/L) and the ratio of anticoagulant to blood is 1:4.

9. Potassium oxalate/sodium fluoride gray head cap. Sodium fluoride is a weak anticoagulant. It is commonly used in combination with potassium oxalate or sodium iodate, with a ratio of one sodium fluoride and three potassium oxalate. The mixture of 4 mg can make 1 ml blood sugar in 23 days to solidify and suppress decomposition, it is a good blood glucose determination for preservatives, can not be used in determination of urea enzymatic urea, also don't have used for the determination of alkaline phosphatase and amylase, recommended for blood glucose testing.