About the Stability Score

Reducing the number and duration of spikes, and keeping a more stable glucose line throughout your day, are short-term targets that can support long-term metabolic health.

How the Stability Score works

The Stability Score shows how stable your glucose levels were on a given day.
It helps you track stability trends day over day.
It is represented on a scale of 60 to 100.
- You can think of this like a letter grade.
- A higher score indicates more stable glucose levels.
Your score is influenced by how long you spend in stable glucose periods, with fewer spikes.
Levels’ spike algorithm continuously monitors for significant glucose excursions and can prompt you to take action and observe how your glucose responds.

What range to aim for

Aim for 85 or higher on most days.
Think progress over perfection.
Scores above 90 are considered above average.

What factors influence your Stability Score

Your score increases when your glucose remains stable with fewer spikes.
Spikes lower your score.
If you regain stability later in the day, your score can recover.

What “Std. Deviation (Variability)” means

Std. Deviation, or Variability, describes how much your glucose fluctuates throughout the day.
Lower variability generally means more stable glucose.
It is calculated by measuring how far your glucose readings vary from your daily average (in mg/dL).

What is an optimal amount of variability

For individuals without obesity or diabetes:

A typical average magnitude of glucose excursions (the difference between high and low points) is 26 to 28 mg/dL.

To help keep variability lower:

Try not to exceed a 30 mg/dL rise from your pre-meal glucose.
Aim for a post-meal value not exceeding 110 mg/dL.

Do exercise spikes affect your Stability Score?

No. Glucose spikes from exercise do not impact your Stability Score if they are marked as strenuous exercise. Learn more here.

How glucose spikes are calculated

Spikes are registered when:

Your glucose exceeds 109 mg/dL.
The difference between the start of your spike and the peak of your spike is +30 mg/dL.

What is baseline glucose?

Your baseline glucose is personalized to your data.
It is calculated using your previous four hours of glucose readings.
Levels uses this baseline to detect periods of stability.