ESR tubes are mainly used for blood sample collection and anti-coaqulation during erythrocyte sedimentation rate test. lt contains 3.8%(0.12gmol/L) sodium citrate buffer which mixed with blood in a ratio of 4:1. It is suitable for ESR testing for different genders and ages.
8x120 ESR tube is applicable to various automated erythrocyte sedimentation rate analyzers. Because of little volume and negative pressure inside the tube, it needs some time for blood collection. Wait for the blood to stop flowing into the blood collection tube and mix it 6-8 times to fully mix the anticoagulant and the blood.