Our 10 Best Nonin 8500 Pulse Oximeter for 2026 [US]

Editor's Choice

9.7

Nonin TruO2 OTC Pulse Oximeter 3250 – FDA-Cleared Blood Oxygen Monitor, Medical-Grade Accuracy, Fingertip Pulse Oximeter, Apple Health Compatible

“This nonin 8500 pulse oximeter is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

ACCURATE ACROSS SKIN TONES & LOW PERFUSION TruO2 OTC delivers accurate SpO2 readings across skin tones (1) and in low circulation or with cold-fingers using Nonins PureSAT technology.
FDA-CLEARED FOR OVER-THE-COUNTER HOME USE Medical-grade pulse oximeter cleared by the FDA for over-the-counter (OTC) use with no prescription required. Built with the same technology used by clinicians, hospitals, and the military.
INVENTORS OF THE FINGERTIP PULSE OXIMETER Founded by the original inventors of the fingertip pulse oximeter, Nonin delivers accuracy for a broad range of patients and health conditions (1).
SMART, EASY-TO-USE DESIGN Bright, easy-to-read LED display with automatic on/off. Nonin CorrectCheck instantly alerts you if your finger is not positioned correctly to provide high-quality measurements.
WIRELESS DATA SHARING & LONG BATTERY LIFE Secure Bluetooth connectivity to compatible iOS devices. Save and share readings with Apple Health or email history using the NoninConnect app. Up to 2,200 spot checks on two included AAA batteries (4). Made in USA. 2-year warranty. FSA/HSA eligible.

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Picked by 397 people today

Our Best Overall Choice

Best Choice

9.7

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

ACCURATE ACROSS SKIN TONES & LOW PERFUSION TruO2 OTC delivers accurate SpO2 readings across skin tones (1) and in low circulation or with cold-fingers using Nonins PureSAT technology.
FDA-CLEARED FOR OVER-THE-COUNTER HOME USE Medical-grade pulse oximeter cleared by the FDA for over-the-counter (OTC) use with no prescription required. Built with the same technology used by clinicians, hospitals, and the military.
INVENTORS OF THE FINGERTIP PULSE OXIMETER Founded by the original inventors of the fingertip pulse oximeter, Nonin delivers accuracy for a broad range of patients and health conditions (1).
SMART, EASY-TO-USE DESIGN Bright, easy-to-read LED display with automatic on/off. Nonin CorrectCheck instantly alerts you if your finger is not positioned correctly to provide high-quality measurements.
WIRELESS DATA SHARING & LONG BATTERY LIFE Secure Bluetooth connectivity to compatible iOS devices. Save and share readings with Apple Health or email history using the NoninConnect app. Up to 2,200 spot checks on two included AAA batteries (4). Made in USA. 2-year warranty. FSA/HSA eligible.

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