ESR (Erythrocyte Sedimentation Rate) Tubes

The blood collection tube shown is an ESR (Erythrocyte Sedimentation Rate) tube, also known as a 4NC sodium citrate tube. Its main features are:

Use: It is specifically designed for the collection and anticoagulation of blood for erythrocyte sedimentation rate (ESR) testing.
Anticoagulant: It contains a 3.8% sodium citrate solution.
Anticoagulant/Blood Ratio: The mixing ratio is one part citrate solution to four parts blood (1:4).
Volume: Available in 2.4 ml, 1.6 ml, 3.2 ml, and 4 ml.
Material: Made of PET (polyethylene terephthalate) or glass.
Cap: The cap is black, which is a standard feature for ESR tubes containing sodium citrate.
Markings: The tube includes fields for the patient’s name (Name), patient number (Pat No.), and batch and date information.
Certification: It bears the CE mark, indicating its compliance with European health, safety, and environmental protection standards.