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How many types of blood collection tubes?

Views: 0     Author: Site Editor     Publish Time: 2021-06-28      Origin: Site

I have compiled "9 kinds of vacuum blood collection tube classification" related knowledge for your reference and study, I hope it can be helpful to you! Generally, there are 9 types of vacuum blood collection tubes, they are distinguished according to the color of the cap. I am not a professor, please contact us for more information.

This passage is going to talk about the following types of the blood collection tube:

Normal blood tube

Rapid serum tube

Inert separator gel coagulant tube

Heparin anticoagulation tube

Plasma separation tube

EDTA anticoagulation tube

Sodium citrate coagulation test tube

Sodium citrate sedimentation test tube


1) Normal blood tube

Normal serum tube with red cap, blood collection tube without additives, used for routine serum biochemistry, blood bank and serology related tests.


2) Rapid serum tube

Rapid serum tube with orange cap, with procoagulant in the blood collection tube to accelerate the clotting process. The Rapid Serum Tubes can coagulate collected blood within 5 minutes and are suitable for emergency serum serialization tests.


3) Inert separator gel coagulant tube

Inert separator gel coagulant tube with golden cap and inert separator gel and coagulant added inside the blood collection tube. After centrifugation of the specimen, the inert separator gel completely separates the liquid components of the blood (serum or plasma) from the solid components (red blood cells, white blood cells, platelets, fibrin, etc.) and completely accumulates in the center of the tube to form a barrier, and the specimen remains stable for 48 hours. Procoagulants can rapidly activate the coagulation mechanism and accelerate the coagulation process, and are suitable for emergency serum biochemical tests.


4) Heparin anticoagulation tube

Heparin anticoagulation tube with green head cap and heparin added in the blood collection tube. Heparin directly has the effect of anti-thrombin, can prolong the specimen clotting time. Suitable for erythrocyte fragility test, blood gas analysis, erythrocyte pressure test, blood sedimentation and general biochemical determination, not suitable for blood coagulation test. Excess heparin can cause aggregation of white blood cells and should not be used for white blood cell counting. It is also not suitable for leukocyte classification because it can make the background of the blood film stained light blue.


5) Plasma separation tube

The plasma separation tube with light green head cap and lithium heparin anticoagulant inside the inert separation tube can achieve rapid separation of plasma, which is the best choice for electrolyte testing and can also be used for routine plasma biochemical determination and emergency plasma biochemical testing such as ICU. Plasma specimens can be directly on the machine and remain stable for 48 hours under refrigeration.


6) EDTA anticoagulation tube

EDTA anticoagulation tube purple head cap, ethylenediaminetetraacetic acid (EDTA, molecular weight 292) and its salt is an amino polycarboxylic acid, can effectively chelate calcium ions in blood specimens, chelate calcium or remove the calcium reaction site will block and terminate the endogenous or exogenous coagulation process, thus preventing blood specimens from coagulation. It is suitable for general hematology tests, not for coagulation tests and platelet function tests, nor for the determination of calcium, potassium, sodium, iron, alkaline phosphatase, creatine kinase and leucine aminopeptidase, but for PCR tests.


7) Sodium citrate coagulation test tube

Sodium citrate coagulation test tube light blue head cap, sodium citrate mainly through chelation with calcium ions in the blood sample and play an anticoagulant role. Suitable for coagulation experiments, the national committee for clinical laboratory standards (NCCLS) recommended anticoagulant concentration is 3.2% or 3.8% (equivalent to 0.109 mol/L or 0.129 mol/L), the ratio of anticoagulant to the ratio of anticoagulant to blood is 1:9.


8) Sodium citrate sedimentation test tube

Sodium citrate sedimentation test tube black cap, sedimentation test requires a sodium citrate concentration of 3.2% (equivalent to 0.109 mol/L) and an anticoagulant to blood ratio of 1:4.

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