How Wearable Rings Are Tracking Your Blood Oxygen

This episode explores how smart rings like the Oura Ring and Samsung Galaxy Ring are bringing continuous blood oxygen saturation (SpO2) monitoring to consumers. Lucas and Luna discuss how the technology works — using photoplethysmography and red/infrared LEDs — and why overnight tracking is more reliable than spot checks on wrist wearables. They dive into a specific study from the University of California, San Francisco that found ring-based SpO2 sensors detected early COVID-19 hypoxemia an average of 2.3 days before symptoms appeared. The conversation covers the limits of current consumer-grade sensors versus medical pulse oximeters, the regulatory gray zone these devices occupy, and what the future holds for ring-based vitals tracking. #SmartRing #BloodOxygen #SpO2 #OuraRing #SamsungGalaxyRing #WearableTech #HealthTech #ContinuousMonitoring #Photoplethysmography #PulseOximetry #COVID19 #Hypoxemia #UCSF #ConsumerHealth #FDA #MedicalDevice #FexingoBusiness #TechPodcast Keep every episode free: buymeacoffee.com/fexingo