09/02/2026
🩸 CGM EXPERIMENT UPDATE:
Stelo vs. Lingo
I’m currently wearing two CGMs at the same time—a Stelo by Dexcom on one arm and a Lingo by Abbott on the other.
Why these two?
I’m especially interested in Stelo because it connects with my Oura Ring, allowing me to look at glucose alongside things like sleep, activity, stress and recovery.
I’m testing Lingo because it’s another accessible, affordable CGM option available without a prescription.
Ultimately, I want to actually use these tools, compare them and understand the data before deciding what I feel comfortable recommending to others.
Both sensors are brand new and placed in the same location on opposite arms, making this little experiment as consistent as possible.
And breakfast gave me something interesting to watch. 👀
At one point after eating:
🔹 Stelo: 146 mg/dL
🔹 Lingo: 113 mg/dL
➡️ A 33-point difference!
Just 30 minutes later:
🔹 Stelo: 99 mg/dL
🔹 Lingo: 101 mg/dL
➡️ Only a 2-point difference.
CGMs measure glucose in interstitial fluid rather than directly in the blood, so differences in timing, sensor technology and algorithms can influence what we’re seeing—especially when glucose is changing.
So I’m adding another layer to the experiment…
👉 A fingerstick.
The next time I see a significant difference, I’ll check my blood glucose with a fingerstick and compare all three:
Stelo | Lingo | Fingerstick
I’m not looking at one number and declaring a winner. I want to see which device most consistently captures the rise, peak, timing and return toward baseline after eating.
Two weeks. Two sensors. And now a third data point. 🩸📈
Stay tuned… this experiment is already getting interesting! 👀
