Pulse oximeter development often requires dependable performance feedback well before a formal regulatory accuracy study is initiated. During this stage, teams iterate on sensor hardware, algorithms, calibration curves, and signal-quality controls. To make meaningful progress, they need a repeatable way to compare performance across prototypes and study sessions.  A transfer standard helps fill that role. It is an intermediary pulse oximeter system with calibration traceable

Pulse oximetry is broadly adopted across clinical care and wearable technologies. Standardized terminology shared by engineering, clinical research, and regulatory teams promotes aligned protocols, reproducible analyses, and more efficient FDA and CE reviews.   This glossary provides clear definitions of core pulse oximetry terms commonly encountered during pulse oximetry testing, controlled desaturation studies following ISO 80601-2-61 , and regulatory-grade CRO engagements.