Phlebotomy is an important field within the medical sector. Phlebotomists perform lab tests in order to test and diagnose diseases. With a growing population and emerging medical research, the career outlook has never been better for phlebotomists. There are a variety of degree and certificate programs available to receive training as a phlebotomist. Most phlebotomists attend a training program at a vocational or technical school, though some receive on the job education.