Dexcom Stelo
Over-the-counter upper-arm glucose biosensor shows trends for adults not on insulin.
Keep in mind Do not use for problematic hypoglycemia. Medical decisions require consultation with a qualified professional.
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The differences that matter
Abbott FreeStyle Libre 2 Plus
Medical interstitial glucose monitoring for people age 2+ with diabetes, including pregnancy per UK labelling.
Keep in mind Manufacturer specifications; no hands-on testing or independent clinical efficacy assessment.
Published specifications and documented constraints. See the full comparison below for prices and sources.
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| Biosensors & healthAdd a model |  |  |
|---|---|---|
| Prices · all markets | $99 USD≈ €88 EURECB 2026-10-13US · Store price · Listed 1 offer records & sources$99 USD≈ €88 EURECB 2026-10-13 US · Store price ListedDexcom One-time purchase, two biosensors Official displayed price; shipping destination, tax treatment and checkout not tested.Check merchant offer ↗Price source ↗ Checked 2026-10-12 | Price not verified 0 offer records & sourcesNo verified price in this audit. |
| Designed for | Over-the-counter upper-arm glucose biosensor shows trends for adults not on insulin. ↗ | Medical interstitial glucose monitoring for people age 2+ with diabetes, including pregnancy per UK labelling. ↗ |
| Form factor | Upper-arm CGM biosensor ↗ | Upper-arm wearable glucose sensor ↗ |
| Measurement | Continuous interstitial glucose ↗ | Not applicable to this category |
| Wear Duration | Up to 15 days ↗ | Not applicable to this category |
| Readings | Not verified | Every minute to compatible LibreLink app ↗ |
| Intended Users | Adults 18+ not on insulin, without problematic hypoglycemia ↗ | Not applicable to this category |
| Interface | Stelo app for compatible smartphones ↗ | Existing Libre 2 reader or compatible LibreLink app ↗ |
| Vision correction | No prescription required in the US ↗ | Not applicable to this category |
| Purpose Class | OTC integrated continuous glucose monitor ↗ | Not applicable to this category |
| Sensor Duration | Not applicable to this category | 15 days ↗ |
| Age Indication | Not applicable to this category | 2+; children 2-12 require adult caregiver supervision ↗ |
| Alerts | Not applicable to this category | Optional high/low glucose alarms ↗ |
| Location | Not applicable to this category | Back of upper arm ↗ |
| Availability | Official product documentation checked. Country-specific fulfilment and checkout were not tested. | Exact manufacturer model verified; market and purchase eligibility follow the linked manufacturer source. |
| Important context |
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| Editorial pick & release | #1 · Our Top 10 Health sensors and monitoringRelease date not verifiedDocumented product in the stated source market; destination availability and checkout not tested. | #9 · Our Top 10 Health sensors and monitoringRelease date not verifiedDocumented product in the stated source market; destination availability and checkout not tested. |
| Evidence | Manufacturer source Checked 2026-10-12 | Manufacturer source Checked 2026-10-12 |
Battery claims use different conditions and are not a controlled benchmark. “Not verified” is an evidence gap, not a missing feature. Prices are dated regional snapshots. Deposits, bundles and historical launch prices are labelled. Brightness measurement methods and battery workloads vary by manufacturer.