Clinical Laboratory Scientists require a bachelor's degree in medical technology or in one of the life sciences. Medical laboratory technicians usually need an associate degree or a certificate.
The usual requirement for an entry-level position as a clinical laboratory scientist is a bachelor's degree with a major in medical technology or one of the life sciences; however, it is possible to qualify for some jobs with a combination of education and on-the-job and specialized training. Universities and hospitals offer medical technology programs.In California, eligibility to take the exam requires a full academic year of clinical training for 52 weeks, 4 days/week, 8 hours/day as well as one 6-hour day/week of face-to-face and online classes.
Clinical laboratory scientists and technicians held about 328,100 jobs in 2008. More than half of jobs were in hospitals. Most of the remaining jobs were in offices of physicians and in medical and diagnostic laboratories. A small proportion was in educational services and in all other ambulatory healthcare services.
This video from Wisconsin College gives a good overview of what a CLS does.