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About CLSI


Committed to Continually
Advancing Laboratory Practices

Discover how we are striving to improve clinical laboratory testing

A not-for-profit membership organization, the Clinical and Laboratory Standards Institute (CLSI) brings together the global laboratory community for a common cause: fostering excellence in laboratory medicine. We do so by facilitating a unique process of developing clinical laboratory testing standards based on input from and consensus among industry, government, and health care professionals.

For over 40 years, our members, volunteers, and customers have made CLSI a respected, transformative leader in the development and implementation of clinical laboratory testing standards. Through our unified efforts, we will continue to set and uphold the standards that drive quality test results, enhance patient care delivery, and improve the public’s health around the world.

Learn About Our Mission

See how we are improving health care outcomes with standards and guidelines for raising levels of quality, safety, and efficiency in laboratory testing and reporting.

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Explore Our Program Areas

We offer an array of resources and benefits through Membership, CLSI U, our Standards and Guidelines, and our Global Health Partnerships program.

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Meet Our Board of Directors

Our Board is dedicated to maintaining the integrity of CLSI’s voluntary consensus process, promoting quality medical testing and health care services, and fulfilling the CLSI mission.

Meet The Board

Visit Our Resource Center

Find key resources for your organization or laboratory to use when implementing CLSI’s clinical laboratory standards in your unique environment.

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Discover the Value of CLSI for Your Organization

Visit the Membership Center to learn how you can get involved with CLSI today.


CLSI Standards by the Numbers

active volunteers creating our standards

standards and guidelines specialty areas

standards development consensus committees

Glen Fine Video

Glen Fine, CEO, CLSI, explains how CLSI develops and promotes best practices in clinical laboratory testing, and the important role members play in that process.


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