A professional who performs any combination of following supportive duties at blood-collection unit of blood bank. Respnsibilities include:

• Schedules appointments over telephone for blood donors.
• Interviews blood donors and records identifying and blood-credit information on registration form.
• Notifies nurse if donor appears to be underweight or too old to give blood.
• Takes blood donor's temperature and pulse to assist during medical interview.
• Unpacks, labels, and stamps date on empty blood packs.
• Posts donor names, blood-control numbers, and donor-group numbers to unit logsheet.
• Seals filled blood packs and sample tubes, using handtools and heat-sealing machine.
• Serves refreshments, such as coffee, juice, cookies, and jelly beans, to donors to prevent or relieve adverse reactions and to begin replenishment of blood fluids.