![Amazon.com: Pulse oximeter fingertip with Plethysmograph and Perfusion Index, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, O2 Monitor Finger for Oxygen,Pulse Ox,Oxi, (White) : Health & Household Amazon.com: Pulse oximeter fingertip with Plethysmograph and Perfusion Index, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, O2 Monitor Finger for Oxygen,Pulse Ox,Oxi, (White) : Health & Household](https://m.media-amazon.com/images/I/61vrsSMjDwL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Pulse oximeter fingertip with Plethysmograph and Perfusion Index, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, O2 Monitor Finger for Oxygen,Pulse Ox,Oxi, (White) : Health & Household
Apollo Cradle Children's Hospital - Pulse oximeter test measures how much oxygen is in blood. Oxygen level is an essential sign of how well a body works, just like a person's blood
![Covid patients should seek early treatment, as study warns of danger in even a slight drop in oxygen Covid patients should seek early treatment, as study warns of danger in even a slight drop in oxygen](https://www.telegraph.co.uk/content/dam/news/2020/10/21/TELEMMGLPICT000232780620_trans_NvBQzQNjv4Bqg9rRwzgtFnjvmJyglZ1dMmDNkpD0g4XBlQdzSDyb4NA.jpeg?imwidth=680)
Covid patients should seek early treatment, as study warns of danger in even a slight drop in oxygen
![Faulty Oxygen Readings Delayed Covid Care for Black and Hispanic Patients: Study - The New York Times Faulty Oxygen Readings Delayed Covid Care for Black and Hispanic Patients: Study - The New York Times](https://static01.nyt.com/images/2023/08/24/science/24PULSE-OX/24PULSE-OX-articleLarge.jpg?quality=75&auto=webp&disable=upscale)
Faulty Oxygen Readings Delayed Covid Care for Black and Hispanic Patients: Study - The New York Times
![News - Pulse oximeter measurements of blood oxygen levels are unreliable in assessing severity of Covid-19 infections across different ethnic groups - University of Nottingham News - Pulse oximeter measurements of blood oxygen levels are unreliable in assessing severity of Covid-19 infections across different ethnic groups - University of Nottingham](https://www.nottingham.ac.uk/PressReleaseLongForm-Images/MHS/Pulse-Oximetry.x8b5001e9.jpg)
News - Pulse oximeter measurements of blood oxygen levels are unreliable in assessing severity of Covid-19 infections across different ethnic groups - University of Nottingham
![Study of an Oxygen Supply and Oxygen Saturation Monitoring System for Radiation Therapy Associated with the Active Breathing Coordinator | Scientific Reports Study of an Oxygen Supply and Oxygen Saturation Monitoring System for Radiation Therapy Associated with the Active Breathing Coordinator | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-018-19576-8/MediaObjects/41598_2018_19576_Fig1_HTML.jpg)
Study of an Oxygen Supply and Oxygen Saturation Monitoring System for Radiation Therapy Associated with the Active Breathing Coordinator | Scientific Reports
![Oxygen saturation targets in infants with bronchiolitis (BIDS): a double-blind, randomised, equivalence trial - The Lancet Oxygen saturation targets in infants with bronchiolitis (BIDS): a double-blind, randomised, equivalence trial - The Lancet](https://www.thelancet.com/cms/attachment/c4723e1e-1699-4239-9168-30408c71e2ad/gr1_lrg.gif)