##  [Oxygen Saturation](/oxygen-saturation) 

  ##  [Oxygen Saturation](https://health.quantumdictionary.io/oxygen-saturation-0) 

  

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**Health & Life Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Proportion of haemoglobin binding sites occupied by oxygen, reported as a percentage and commonly estimated noninvasively by pulse oximetry (SpO2); when measured invasively by co‑oximetry it yields arterial oxygen saturation (SaO2) and can distinguish dyshemoglobinemias.