The Guidelines for Sample Collection Personnel (Guidelines), is a third-level, non-mandatory document that supports the International Standard for Testing and Investigation (ISTI), specifically Annex G (Sample Collection Personnel Requirements). These Guidelines are meant for Sample Collection Authorities (SCAs) with responsibility for sample collection personnel. While most relevant to those SCAs with their own pool of sample collection personnel, the Guidelines are also a useful reference for those AntiDoping Organizations (ADOs) using the services of third-party SCAs. Where the ISTI gives a minimum of what to do, the Guidelines aim to help you understand how to do it, giving you examples and suggestions, and showing you how to go above and beyond the requirements where possible.