Dexcom G7
Prescription continuous glucose system for people with diabetes, including children from age two.
Keep in mind No unverified insurance copay is treated as a device retail price.
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The differences that matter
Medtronic Guardian 4
Prescription glucose sensor used with a compatible MiniMed 780G system.
Keep in mind Not a stand-alone OTC CGM. Current US comparison and Guardian 4 instructions govern the exact compatible system.
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 | £51.25 GBP≈ €61 EUR · $68 USDECB 2026-10-12UK · Store price · Manufacturer listing; checkout and exact stock not independently verified 1 offer records & sources£51.25 GBP≈ €61 EUR · $68 USDECB 2026-10-12 UK · Store price Manufacturer listing; checkout and exact stock not independently verifiedDexcom One original G7 10-day sensor; receiver excluded UK maker-store one 10-day G7 sensor is GBP 51.25 excluding VAT. This offer is original G7, not G7 15 Day; receiver and optional recurring plans are separate.Check merchant offer ↗Price source ↗ Checked 2026-10-13 | Price not verified 0 offer records & sourcesNo verified price in this audit. |
| Designed for | Prescription continuous glucose system for people with diabetes, including children from age two. ↗ | Prescription glucose sensor used with a compatible MiniMed 780G system. ↗ |
| Form factor | Wearable glucose sensor ↗ | Subcutaneous upper-arm sensor plus reusable on-body transmitter ↗ |
| Measurement | Continuous interstitial glucose ↗ | Not applicable to this category |
| Intended Users | People with type 1, type 2 or gestational diabetes; ages 2+ ↗ | Not applicable to this category |
| Interface | Compatible app or receiver ↗ | Not applicable to this category |
| Connectivity | Compatible pump, pen and health-app integrations ↗ | Not applicable to this category |
| Purpose Class | Medical CGM ↗ | Not applicable to this category |
| Sensor Duration | Not applicable to this category | Up to seven days ↗ |
| Warmup | Not applicable to this category | Two hours ↗ |
| Age Indication | Not applicable to this category | 7+ per current US comparison ↗ |
| Components | Not applicable to this category | Guardian 4 sensor, Guardian 4 transmitter, reusable serter ↗ |
| Insertion | Not applicable to this category | Two-handed serter procedure ↗ |
| Site | Not applicable to this category | Back of upper arm only in US instructions ↗ |
| Availability | Exact original G7 UK manufacturer shop offer verified. This price excludes VAT and is not the US G7 15 Day model. | Exact manufacturer model verified; market and purchase eligibility follow the linked manufacturer source. |
| Important context |
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| Editorial pick & release | No editorial ranking recorded | No editorial ranking recorded |
| Evidence | Manufacturer source Checked 2026-10-13 | Manufacturer source Checked 2026-10-13 |
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.