Final answer:
The 'tiger top' tube is known as a serum separating tube used to collect blood samples allowing for the separation of serum from cells after centrifugation.
Step-by-step explanation:
The serum separating tube often referred to as a “tiger top” tube, is used to collect blood samples that, after centrifugation, allow for the separation of serum from blood cells. Serum is the liquid part of blood that does not include cells or clotting factors. It is typically used for various blood tests because it provides a clear liquid free from cells that can be easily used to measure different components of the blood. The “tiger top” tube gets its nickname from the tiger stripe pattern on the tube, and typically has a gel present that helps to divide the serum from the clotted blood after centrifugation.