This document provides information on standard operating procedures (SOPs), including what an SOP is, why SOPs are written, different SOP formats, and how to write an SOP. An SOP is a set of instructions for completing tasks safely, meeting regulations, and optimizing processes. SOPs are written to provide training, ensure consistent and correct procedures, maintain regulatory compliance, and serve as records for audits and investigations. SOPs should include a title, purpose, scope, responsibilities, references, definitions, guidelines, and detailed procedures. Attachments of related documents may also be included.