Is CLSI an accredited standards development organization? Victoria Phucas November 04, 2019 21:43 Updated Follow Yes, CLSI is accredited by the American National Standards Institute. Related articles What is CLSI's policy on harmonization of terms and methods? Are CLSI standards and guidelines mandatory? Why types of documents and products does CLSI offer? How often does CLSI update documents? What is the CLSI process for developing a consensus standard or guideline?