What is the process of collecting blood?

The process of collecting blood typically involves several steps. First, a healthcare professional cleans the area of skin where the blood will be drawn, usually from a vein in the arm. A tourniquet is applied to make the vein more prominent, and a sterile needle is inserted to collect the blood into a vial or syringe. After the collection, the needle is removed, and pressure is applied to the site to stop any bleeding before a bandage is applied.