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Setting the Standard for Clinical Laboratory Testing Quality

Our members, volunteers, and customers have made CLSI a respected leader in developing standards that improve the quality of patient care.

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Is Your Laboratory Prepared?

CLSI standards can help keep your laboratory safe! Prepare your laboratory with one of our leading clinical laboratory safety standards today.

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View Our New 2014 Fall Catalog!

Find the latest in CLSI consensus-based standards and guidelines, companion products, subscription offerings, educational resources and training opportunities!

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Nominate a Colleague for the 2015 CLSI Excellence Awards

These awards celebrate the achievements of volunteers who have helped improve the quality of medical care worldwide.

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Find High-Quality Standards and Guidelines Related to Your Profession

Each CLSI document focuses on different specialty areas, including laboratory basics, quality management systems, verification and validation, and information management.

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Why Use Our Documents?

  • Facilitate your laboratory’s accreditation preparedness.
  • Speed development of standard operating procedures.
  • Streamline product review processes with data packages that meet regulatory requirements.

Learn How to Put CLSI Standards Into Practice to Improve Quality

CLSI U is geared to meet the needs of busy laboratorians by providing a variety of resources that make participation in continuing education (CE) programs easy.

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Why Choose CLSI U?

  • Enhance comprehension and use of CLSI standards in the laboratory.
  • Learn from the experts who develop the standards.
  • Earn CE credits from P.A.C.E.®.

clsi u education resources

See all the educational opportunities and offerings available at CLSI U.

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Access Everything You Need to Achieve Excellence in Laboratory Testing

The value of a CLSI membership begins with significant discounts on our trusted clinical laboratory standards and guidelines, but the benefits extend far beyond cost savings.

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Why Join CLSI?

  • Receive up to 70% savings on CLSI products and programs.
  • Connect with 1,600+ organizations in the global laboratory community.
  • Actively collaborate on CLSI standards development.

membership special

CLSI membership is not only applicable to organizations, individuals are now about to join!

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Maximize Your Voice in the Global Health Care Community

Volunteering with CLSI gives you an unmatched opportunity to contribute your expertise to improve the quality of laboratory testing and health care worldwide.

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Why Volunteer?

  • Take part in developing the standards that affect the work you do each day.
  • Provide hands-on support services that can help save lives.
  • Enrich your professional career and resumé while making a personal impact.


Explore volunteering for Standards Development or Global Health Partnerships.

Call for Volunteers

2014 Membership Special

Become a member today and receive
$100 OFF your membership!
Use promo code 100Fall14
to sign up as a member today!

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Upcoming Educational Opportunities

CLSI/APHL Webinars:

CLSI 2015 Antimicrobial Susceptibility Testing Update

Each January, CLSI updates standards for antimicrobial susceptibility testing (AST). It is important for clinical laboratories to incorporate the new recommendations into routine practice to optimize detection and reporting of antimicrobial resistance. In January 2015, the annual update of the M100 tables (CLSI document M100-S25) will publish. In addition, there will be updates to the standards that describe performance of disk diffusion and MIC tests in versions M02-A12 and M07-A10, respectively. Some highlights for 2015 include introduction of the carbaNP test for carbapenemases and expanded recommendations for quality control testing. These changes and several other new recommendations found in M100-S25, M02-A12 and M07-A10 will be discussed. In addition to the webinar, an optional postprogram self-assessment will be provided that will allow individuals to assess their knowledge regarding the most important AST and reporting issues for 2015. Laboratories can use this feature to augment competency assessment requirements for their staff.


February 4, 2015 | 1:00-2:30 PM Eastern (US) Time
February 5, 2015 | 3:00-4:30 PM Eastern (US) Time

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Understanding the Cost of Quality in the Laboratory (QMS20-R) is a valuable report that provides guidance to a lab in understanding and managing the different types of quality costs that affect processes, services, and financial well-being.

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CLSI-Catalog_WEB 2

Are You Looking for Information Regarding FDA Proposed Requirements for Laboratory-Developed Tests (LDTs)? In this helpful guide, CLSI explains new LDT regulations in plain language, and provides expert insight into proven tips for achieving compliance.

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View our crosswalks to easily find the CLSI documents your laboratory needs, including standards to help your lab prepare for accreditation and inspection.


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CAP Crosswalk CLMA Crosswalk FDA Crosswalk ISO Crosswalk Joint Commission Crosswalk

Featured Video on The Cost of Quality

Luann Ochs

  • Recent News
  • Published Articles


CLSI Offers New eLearning Certificate Program on Implementing the Cost of Quality in the Laboratory

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CLSI Releases an Updated Standard on Nongynecological Cytology Specimens

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Everything You’ve Always Wanted to Know About the Care and Upkeep of Clinical Laboratory Equipment

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QMS: A Model for Laboratory Services GP26-A4

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Read sample pages of CLSI documents in our online shop!

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New! Online workshop about the Cost of Quality in your lab!

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EP23™ Online Workshop: Risk-Based Tools to Meet IQCP Requirements

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