Continuous Ketone Monitors: The Next CGM Revolution for Metabolic Health
By Dr. Sarah Mitchell, Respiratory Equipment Specialist · Published 2026-06-03 · 7 min read
Abbott's Lingo and Sibio's GKI sensor now track ketones in real-time. Here is what continuous ketone monitoring means for keto, fasting, and longevity.
Beyond Glucose: Real-Time Ketones
Continuous ketone monitors (CKMs) measure beta-hydroxybutyrate in interstitial fluid every minute — the same way CGMs measure glucose.
Leading 2026 Devices
- Abbott Lingo Ketone+ — 14-day sensor, $89 cash
- Sibio GKI — paired glucose + ketone with auto-GKI score
- Dexcom Stelo Pro — third-party ketone module rumored Q4
Why Track Ketones Continuously
- Verify true ketosis during fasting or keto
- Catch DKA risk early in type-1 diabetics on SGLT-2 inhibitors
- Optimize endurance fueling
- Track therapeutic ketosis for epilepsy, migraines, and emerging Alzheimer protocols
Practical Targets
- Nutritional ketosis: 0.5–3.0 mmol/L
- Deep fasting: 3.0–6.0 mmol/L
- DKA warning: >7 mmol/L with high glucose
Pair CKM data with VO2 Max from a smart ring and you have a low-cost metabolic-health dashboard rivaling a clinical workup.