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SpO2

SpO2

Oxygen saturation is a relative measure of the quantity of dissolved or carried oxygen in the blood. It is usually measured as percentage of hemoglobin binding sites occupied by oxygen in the bloodstream.

Arterial oxygen saturation measured at the periphery is known as SpO2.

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Signal Overview

Pulse oximetry or oximetry is a non-invasive method, which relies on the light absorption characteristics of saturated hemoglobin and thus allows monitoring of the oxygenation of a subject's hemoglobin. Oximetry involves placing a sensor on a thin part of the subject’s anatomy such as a fingertip or earlobe, and light containing both red and infrared wavelengths is passed from one side to the other. These light waveforms are transmitted by a semiconductor light emitting diode and detected by a photodetector.

Oximetry determines SpO2 by analyzing two wavelengths of light (660 nm and 910 nm) that are differentially absorbed by specific hemoglobin structures in the blood. Oxygenated hemoglobin (HbO2) absorbs more infrared light and allows more red light to pass through. Deoxygenated hemoglobin (Hb) absorbs more red light and allows more infrared light to pass through. The relative absorption of these wavelengths reflects the ratio of oxygenated to total haemoglobin, and this ratio is expressed as a percentage. As oximetry does not detect the presence of carboxyhemoglobin and methemoglobin, SaO2 must strictly be referred to as SpO2. For a healthy human adult, a SpO2 of 97% to 99% is considered normal.

Signal
LabChart

Enabling Discovery

LabChart

All your SpO2 analysis in one place

LabChart software is designed specifically for life science data and provides up to 32 channels for data display and analysis options that are powerful and easy to use. With auto-recognition of ADI and LabChart Compatible hardware, multi-window views, one touch recording, simultaneous recording from multiple devices, specialized preconfigured settings, easy sharing options and an interface that can be customized to show only the features you want to use.

Sensor Selection

A range of sensors are available for measurement of SpO2. Selecting the right sensor for your subject and desired outcomes is critical to signal quality.

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Features and Add-Ons

Additional acquisition and analysis options to support your SpO2 analysis:

Explore SpO2 Data in LabChart Reader

LabChart Reader is a free application for conducting limited analyses of LabChart data. Download a trial package with example data below.

Platform Required

Thanks! Your trial package is now downloading.

Once downloaded, please unzip the folder and install the LabChart Reader application.

Open the "LabChart Data Files" folder to find data files (".adicht"). Data files can be opened in LabChart Reader by double clicking on the file name.

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Thank you for your interest in SpO2. Please complete and submit the form below and an ADInstruments representative will aim to get in touch within one working day. If you’d like to speak to someone immediately, office contact information is available from the contact page.

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Ask a question

Thank you for your interest in SpO2. Please complete and submit the form below and an ADInstruments representative will aim to get in touch within one working day. If you’d like to speak to someone immediately, office contact information is available from the contact page.

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