Disposable Vacuum Blood Collection Tube of Black Cap ESR Tube
Application
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.
Specification
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.
● 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.
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