Leave Your Message

Disposable Vacuum Blood Collection Tube of Black Cap ESR Tube

Disposable vacuum blood collection tube which with1:4 sodium citrate.

ESR tube with black cap, the sodium citrate concentration required for the black cap erythrocyte sedimentation rate test tube is 3.2% (equivalent to 0.109 mol/L), and the ratio of anticoagulant to blood is 1:4. Contains 0.4mL of 3.8% sodium citrate. Draw blood to 2.0ml. This is a special test tube for erythrocyte sedimentation rate. The sample type is plasma and is suitable for erythrocyte sedimentation rate. Invert and mix 5-8 times,shake well immediately after drawing blood. The difference between it and the test tube for coagulation factor testing is that the concentration of anticoagulant and the ratio of blood are different and should not be confused.


    ESR Tube is used in blood collection and anti-coagulation for sedimentation rate test. It contains a 0.129mol/L(3.8%)buffered tri-sodium citrate solution with mixing ratio of 1 part citrate solution to 4 parts blood. ESR measurement refer to the Westergren method.


    Tube Size Tube Material Additive Draw Volume Cap color Shelf life Packaging
    13*75mm PET/Glass Sodium citrate 3.8% 2~3ml Black 2 years 1800pcs/ctn
    13*100mm PET/Glass Sodium citrate 3.8% 4~5ml Black 2 years 1200pcs/ctn
    16*100mm PET/Glass Sodium citrate 3.8% 7~10ml Black 2 years 1200pcs/ctn
    8*120mm Glass Sodium citrate 3.8% 1.28~1.6ml Black 2 years 1200pcs/ctn

    ESR Definition

    Full name is Erythrocyte sedimentation rate,abbreviated:ESR.

    The sedimentation speed of red blood cells is expressed by the distance that red blood cells sink at the end of the first hour, referred to as erythrocyte sedimentation rate.

    ● Brief Introduction: In healthy people, the erythrocyte sedimentation rate value fluctuates within a narrow range. In many pathological conditions, the erythrocyte sedimentation rate is significantly increased. Erythrocyte sedimentation is the result of the interaction of multiple factors.

    ● Principle: Red blood cells in the blood flow repel each other due to factors such as the negative charge of sialic acid on the cell membrane surface, so that the distance between cells is about 25nm, so they are dispersed and suspended from each other and sink slowly. If the plasma or red blood cells themselves change, the erythrocyte sedimentation rate can change.

    ● Methodological evaluation: Westergren's method.


    Leave Your Message