Vacuum Blood Collection Tube Coagulation Tube

    A blue top blood collection tube, also known as a light blue tube or sodium citrate tube, is a medical laboratory tube used to collect blood samples for coagulation tests. The tube contains sodium citrate, an anticoagulant that prevents blood from clotting by binding to calcium ions.

Here are some things to know about blue top blood collection tubes:

• Mixing

After collecting a blood sample, the tube is gently inverted several times to mix the anticoagulant with the blood.

• Centrifugation

Before performing coagulation tests, the tubes need to be centrifuged to separate the plasma.

• Color coding

The color of a blood collection tube's cap indicates the type of additives in the tube. 

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