Membership provides more than access to standards. Join a global community of laboratory professionals with exclusive access to the expert guidance, education, training, tools, and resources that support quality and success every day.
The Quality of Your Results
Depends on the Standards
Behind Them.
Behind every test result is a patient waiting for answers. Reliable laboratory testing informs diagnoses, guides treatment, and helps improve patient outcomes.
Laboratories and test developers don't achieve quality by chance. They rely on trusted standards, proven practices, and well-trained teams. That's why organizations around the world turn to CLSI to support quality, compliance, consistency, and confidence in testing.
Laboratories and test developers don't achieve quality by chance. They rely on trusted standards, proven practices, and well-trained teams. That's why organizations around the world turn to CLSI to support quality, compliance, consistency, and confidence in testing.
When the stakes are high, laboratory professionals rely on CLSI.
Explore CLSI Standards and Resources.
Discover the Benefits of Membership.
Spotlight on Essential Standards
Explore important standards that drive quality and compliance in laboratories.
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.
Have an idea for a
Standards Project?
CLSI welcomes project ideas and proposals from the laboratory community. If you have an idea for new standards or needed resources, let us know!
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.
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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
Antimicrobial Susceptibility Testing
Standardized antibiotic dosing can present challenges in critical care. Learn how the new consensus guidance outlines therapeutic drug monitoring (TDM) and lab-pharmacy workflows for beta-lactam dosing in acutely ill patients.
Quality Management
What Lab Professionals Need to Know: Preparing for Accreditation and Inspection Using CLSI Standards
Inspection and accreditation doesn't have to be stressful. Using CLSI standards streamlines the process and has your laboratory inspection ready, and prepared to achieve accreditation with ease.
Laboratory Developed Tests
Through the power of translation, access to CLSI standards is advancing around the world, helping to create harmonization across the medical laboratory industry.