Color and Classification of Blood Collection Tubes

Qingdao Bingcheng Medical Device Co., Ltd. is an enterprise specializing in the sale of disposable medical inspection consumables. The company is located in Qingdao, Shandong Province,with convenient transportation and beautiful environment.Our company mainly sells virus sampling tubes, nose and throat swab, rapid antigen test kits, face mask, disposable negative pressure blood sampling containers and other medical consumables.

Qingdao Bingcheng Medical Device Co., Ltd. is equipped with a complete R&D, technology, production, quality and other teams.  The colors and types of our blood collection tubes are as follows:

Red cap tube (additive-free dry vacuum tube)

The inner wall of the blood collection tube is evenly coated with a drug (silicon oil) to prevent wall hanging. It uses the principle of natural blood coagulation to coagulate blood, and after the serum is naturally precipitated, it is centrifuged for use. Mainly used for serum biochemistry (liver function, kidney function, myocardial enzyme, amylase, etc.), electrolytes (serum potassium, sodium, chloride, calcium, phosphorus, etc.), thyroid function, drug testing, AIDS testing, tumor markers, serum immunity study.

Orange-red head cover tube (coagulation tube, this is indeed orange-red, but it is very similar to the red above)

The inner wall of the blood collection tube is evenly coated with silicone oil to prevent wall hanging, and a coagulant is added at the same time. The coagulant can activate fibrin, turn soluble fibrin into insoluble fibrin polymer, and then form a stable fibrin clot. The collected blood can be clotted. Generally used for emergency biochemistry.

Golden yellow cap tube (blood collection tube containing inert separating gel and coagulant)

The tube wall is siliconized and coated with a coagulant to accelerate blood coagulation and shorten the test time. Separation gel is added in the tube. The separation gel has good affinity and plays an isolation role. Generally, even on an ordinary centrifuge, the separation gel can completely separate and accumulate the liquid components (serum) and solid components (blood cells) in the blood. Form a barrier in the test tube. No oil droplets are produced in the serum after centrifugation, so it does not clog the machine. Mainly used for serum biochemistry (liver function, kidney function, myocardial enzyme, amylase, etc.), electrolytes (serum potassium, sodium, chloride, calcium, phosphorus, etc.), thyroid function, drug testing, AIDS testing, tumor markers, PCR, TORCH, serum immunological detection, etc.

Green cap tube (heparin anticoagulant tube)

Blood collection tubes containing sodium heparin or lithium heparin, heparin is a mucopolysaccharide containing sulfate groups with a strong negative charge, which has the effect of enhancing antithrombin III inactivation of serine protease, thereby preventing the formation of thrombin, And have a variety of anticoagulant effects such as preventing platelet aggregation. Heparin tubes are generally used for the detection of emergency biochemistry, TORCH, and blood flow. When testing sodium ions in blood samples, heparin sodium tubes cannot be used, so as not to affect the test results. It also cannot be used for leukocyte counting and differentiation, as heparin can cause leukocyte aggregation.

Purple cap tube (blood collection tube containing EDTA and its salts)

EDTA is an amino polycarboxylic acid that can effectively chelate calcium ions in the blood, chelating calcium will remove calcium from the reaction site will prevent and terminate the endogenous or extrinsic coagulation process, thereby To prevent blood coagulation, compared with other anticoagulants, it has little effect on the agglutination of blood cells and the morphology of blood cells, so EDTA salts (2K, 3K, 2Na) are usually used as anticoagulants. For general hematology (blood routine) examination and blood ammonia detection. It cannot be used for blood coagulation and trace element inspection.

Blue capped tube (blood collection tube with sodium citrate anticoagulant)

Sodium citrate chelates with calcium ions in the blood sample to play an anticoagulant effect. The ratio of anticoagulant to blood is 1:9. It is mainly used in the fibrinolytic system (prothrombin time, thrombin time, activated partial thrombin time, fiber protein). When collecting blood, pay attention to the sufficient blood volume (2ml) to ensure the accuracy of the test results. Immediately after blood collection, it should be inverted and mixed 8-10 times.

Black head cap tube (containing 0.109mol/L sodium citrate)

The volume ratio of anticoagulant to blood is 1:4, which is generally used for erythrocyte sedimentation rate detection. When collecting blood, pay attention to the sufficient blood volume (2ml) to ensure the accuracy of the test results. Immediately after blood collection, it should be inverted and mixed 8-10 times.

Grey capped tube (contains potassium oxalate/sodium fluoride)

Sodium fluoride is a weak anticoagulant, which has a good effect on preventing blood sugar degradation. It is an excellent preservative for blood sugar testing. When using it, it should be slowly inverted and mixed. It is generally used for blood sugar testing, and cannot be used for urease determination. Urea, also cannot be used for the detection of alkaline phosphatase and amylase. 

Qingdao Bingcheng Medical Device company adheres to blood collection tubes research and can provide new product development services such as OEM customization and drawings and samples. Welcome to consult .

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