Nutrition
CGM Warm-Up Period
A CGM warm-up period is the stabilization window after inserting a new sensor—wait before trusting alerts or changing meals based on early readings.
A CGM warm-up period is the one-to-two-hour stabilization after inserting a new continuous glucose monitor sensor before readings fully align with blood glucose. Apps often hide or gray out data until warm-up ends; eating or dosing off early readings can mislead.
Keep the prior sensor or fingersticks handy during swaps.
Common questions
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Why do CGM readings look wrong right after insertion?
Interstitial fluid lags and sensors need stabilization—wait for the app's warm-up complete signal before reacting to highs or lows.
Related terms
Put CGM Warm-Up Period into practice
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