Careers in CLS

What is a CLS?

CLS stands for Clinical Laboratory Scientist. The title CLS is equivalent to the title Medical Technologist (but because the California license is a CLS license, we use the term CLS.)

What do CLSs do?

Currently in California, all highly complex blood tests, urinalysis, toxicology, and microbiology ordered by health care providers must be performed by a licensed CLS. Sixty-six percent of the health care decisions are made on the basis of lab test results generated by licensed CLSs. Moderate and waived complexity tests can be performed by Medical Laboratory Technicians, a new type of license recently approved by the state. CLSs will supervise MLTs. Outside of the acute care environment, CLSs can do research, marketing and sales, education, quality assurance and consulting work.

Where do CLSs work?

Most CLSs work in hospital laboratories, reference laboratories or physician's office labs performing lab tests for patients. However, CLSs can also apply their expertise in other fields including biotechnology, pharmaceutical sales and marketing, veterinary diagnostics and education. For more information about the profession, please visit ASCLS Career Opportunities or ASCP Career Center.

Who can become a CLS?

In California, you must have a bachelor's degree, complete certain prerequisite courses and have training through an approved CLS training program to qualify for the state licensing exam. In addition, a CLS needs to have good laboratory technique, strong critical thinking skills, the ability to work under stressful conditions, a professional attitude and (in my opinion) a well-developed sense of humor. Any experience that you have had that taught you those skills is useful preparation for work as a CLS. Previous experience with phlebotomy is a plus.

Current Employment Trends

The number of job opening for CLSs is likely to increase in the next 5 years. Currently, 800-1000 CLS licenses are not renewed each year and 200-300 new licenses are issued. This leaves a shortfall of 600-700 positions opening on an annual basis. In addition, 50% of the workers in California laboratories are 52 years old or older. In the next 13 years we will lose half of our workforce.

Typical Salaries

Please visit www.salary.com for salary information.