What is the function of the clot activator in blood collection tubes?

The function of the clot activator in blood collection tubes is primarily to accelerate the clotting process, which facilitates the separation of serum from the cellular components of blood. When blood is collected into a tube containing a clot activator, this substance promotes the activation of clotting factors, leading to the formation of a clot in a shorter time frame. Once the blood has clotted, the tube can be centrifuged to separate the serum, which is the liquid portion that can be used for a variety of laboratory tests.

The rapid clotting process is particularly important in clinical settings where timely results are crucial. By using a tube with a clot activator, phlebotomists can ensure that the samples are prepared more quickly for analysis, thereby supporting efficient laboratory workflows and improved patient care.