Sensor glucose readings, taken by FreeStyle Libre sensors, reflect glucose levels in the interstitial fluid (ISF) rather than directly in the blood, and typically lag behind a finger-prick blood glucose reading by approximately 2.4 to 4.6 minutes.
freestyle.abbott
When glucose levels are changing rapidly—such as after meals or during exercise—sensor readings may differ from blood glucose (e.g., appearing lower during rising levels and higher during falling levels), although when levels are stable, both readings align closely.
Learn about the accuracy, advantages & disadvantages and much more - https://www.freestyle.abbot ...