Stronger laboratories.
Safer, more reliable testing.

CLSI ensures your laboratory delivers quality results every time with international standards, training, and tools.

Spotlight on Essential Standards

Explore important standards that drive quality and compliance in laboratories.

View All

CLSI M07
Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria That...
Twelfth Edition
Microbiology
$180.00
CLSI EP07
Interference Testing in Clinical Chemistry
Third Edition
Method Evaluation
$180.00
CLSI EP10
Preliminary Evaluation of Quantitative Medical Laboratory Measurement...
Fourth Edition
Method Evaluation
$180.00
CLSI AUTO11
Information Technology Security of In Vitro Diagnostic Instruments and...
Third Edition
Automation and Informatics
$180.00
Woman with Baby
Microorganisms
Global Representation

The Global Leader
for Clinical
Laboratory Standards

International laboratory standards assure patients and providers that the tests they rely on are safe and accurate. Anywhere, every time. Quality practices allow for innovation and improvements in diagnostic testing, setting the course for better health care today and tomorrow. CLSI is committed to developing and promoting the use of international standards to support better patient outcomes and global public health.

CLSI is also a member-based nonprofit organization representing more than 26,000 laboratory professionals and almost 2,000 subject matter experts participating in standards development.

Testing with Confidence:
Evaluation Protocols
and Strategies for Compliance in an Evolving Regulatory Environment

Ensure your lab is ready to meet regulatory requirements. Don't miss this critical half-day virtual training event April 29.

Featuring

  • Real-world validation strategies from leading labs
  • Insights from regulatory and industry experts
  • Tools to help your team conduct self-audits and ensure compliance 
  • Up to 8 CE credits for participating
  • On-demand recordings for registered participants
  • Group registration discounts available for laboratory teams
Standards Development

Setting the Standard
Together

CLSI’s collaborative approach ensures balanced representation from the global laboratory community to yield unbiased consensus standards and best practices that can be confidently adopted by laboratories, clinicians, agencies, and industry leaders around the world.

Empower Your Organization,
Elevate Your Career

CLSI members have access to the foremost industry, health care, and regulatory experts around the world, whose deep knowledge and practical expertise inform every piece of guidance CLSI issues.

Standards Implementation

Ensuring Quality
Testing

As the recognized leader facilitating the development of global consensus standards and guidance, CLSI sets your lab, your team, and your organization up for success.

Share Your Expertise

Join our community of industry leaders who volunteer their experience and knowledge to drive innovation and excellence in laboratory practices.

New Product

Method Navigator

Method Navigator enables users to easily reference and access resources for the establishment and implementation of laboratory-developed tests (LDTs) or other regulatory-approved commercial test methods.

Latest Insights

Volunteer
We spoke with CLSI volunteer Dr. Aleksei Tikhonov, PhD about the vital role CLSI volunteers have in supporting laboratory professionals and ensuring quality across labs worldwide.
Article
During Medical Laboratory Professionals Week, we honor the skilled scientists behind the scenes who play a vital role in patient care. Their expertise ensures accurate diagnoses and drives innovation, making a meaningful impact on health care worldwide.
Article
CLSI has relaunched a brand new and improved website with streamlined navigation, new content and features, and a personalized user experience. Learn more about these improvements impact your experience with CLSI.