The role of red, orange, golden and green cap blood collection tubes

1. Red cap blood collection tube
Serum tube, blood collection tube without additives, used for routine biochemical and immunological related tests.
2. Orange cap blood collection tube
There is a coagulant in the blood collection tube, which can activate fibrin, turn soluble fibrin into insoluble fibrin polymer, and then form a stable fibrin clot. The rapid serum tube can coagulate the collected blood within 5 minutes, which is suitable for emergency series tests.
3. Golden cap blood collection tube
Inert separation gel coagulation tube, inert separation gel and coagulant are added in the blood collection tube. After the sample is centrifuged, the inert separation gel can completely separate the liquid components (serum or plasma) and solid components (red blood cells, white blood cells, platelets, fibrin, etc.) in the blood, and completely accumulate in the center of the test tube to form a barrier. remain stable within. Procoagulants can quickly activate the coagulation mechanism and accelerate the coagulation process, and are suitable for emergency series tests.
4. Green cap blood collection tube
Heparin anticoagulation tube, with heparin added to the blood collection tube. It is suitable for hemorheology, red blood cell fragility test, blood gas analysis, hematocrit test, and general biochemical determination. Heparin has the effect of antithrombin, which can prolong the coagulation time of the specimen and is not suitable for the coagulation test. Excessive heparin can cause aggregation of white blood cells and cannot be used for white blood cell counts. It is also not suitable for morphological examination because it can make the blood stained background light blue.