What is the lab processed blood sample for collection of blood cells?

A lab-processed blood sample for the collection of blood cells typically involves a procedure called venipuncture, where blood is drawn from a vein, often in the arm. This blood is then collected in specialized tubes, often containing anticoagulants to prevent clotting. The sample is processed through centrifugation to separate the blood components, allowing for the collection of specific blood cells, such as red blood cells, white blood cells, and platelets, for various diagnostic tests or treatments.