Is CLSI an accredited standards development organization? Victoria (Phucas) Colangelo 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? Why types of documents and products does CLSI offer? What is the CLSI process for developing a consensus standard or guideline? Are CLSI standards and guidelines mandatory? How do I become a CLSI member?