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.