Serum Separator Tube (SST)

A Serum Separator Tube (SST) is a type of blood collection tube used for testing. It contains a gel that separates serum (the liquid part of blood without cells) from blood cells after centrifugation. When blood is drawn into the tube and spun, the gel forms a barrier, making it easier to extract clear serum for laboratory tests. SSTs are commonly used for blood chemistry, hormone, and other diagnostic tests, providing a clean, stable sample that improves accuracy and efficiency in laboratory analysis.