Job Description Principal Accountabilities: 1. Performs screening tests and reports results. 2. Assembles equipment, such as tourniquet, needles, disposable containers for needles, blood collection devices, gauze, cotton, and alcohol on work tray, according to requirements for specified tests or procedures. 3. Verifies or records identity of patient or donor and converses with patient or donor to allay fear of procedure. 4. Applies tourniquet to arm, locates accessible vein, swabs puncture area with antiseptic, and inserts needle into vein to draw blood into collection tube or bag.