DevicesUpdated June 2026

Dexcom G7 CGM (+ backup glucometer)

For context: continuous glucose monitoring (CGM) has largely replaced standalone glucometers as the primary monitoring tool in T1D — the Dexcom G7 provides a reading every 5 minutes, trend arrows, and alarms without finger pricks. The G7 achieves 8.2% MARD (mean absolute relative difference) — more accurate than mos…

Reviewed by
HealthRankings editors
Evidence
Limited
Overall score9.6/10Excellent
Price$115Mid-range
HSA / FSACheck with provider
EvidenceLimited
Quick take

What we loved& what to know.

Strengths

  • CGM provides reading every 5 minutes — transforms T1D management
  • Trend arrows show glucose direction and rate
  • Alarms for hypo and hyperglycemia
  • Dexcom Clarity app — Time In Range tracking
  • Integrates with Tandem Control-IQ closed loop pump
  • 10-day sensor wear — no daily finger pricks
  • Prescription required
  • Monthly ongoing cost (partially offset by insurance)
  • Still needs backup glucometer for low verification

Tradeoffs

  • Prescription required
  • Monthly ongoing cost (partially offset by insurance)
  • Still needs backup glucometer for low verification
Real-world usage

Living with the Dexcom G7 CGM (+ backup glucometer).

Practical considerations for daily operation.

Daily routine

Designed to slot into a typical morning health-check routine without friction.

Learning curve

Plan a short learning curve to get a feel for the device's prompts and ideal positioning.

Maintenance

Keep the unit clean and store it in a dry case to preserve accuracy long-term.

Portability

Best kept on a counter or shelf at home; not engineered for daily commuting.

Manual / offline use

Works fully offline — every key reading is visible on the device itself, no phone required.

Hands-on notes

Deep dives.

At a Glance

For context: continuous glucose monitoring (CGM) has largely replaced standalone glucometers as the primary monitoring tool in T1D — the Dexcom G7 provides a reading every 5 minutes, trend arrows, and alarms without finger pricks. The G7 achieves 8.2% MARD (mean absolute relative difference) — more accurate than most glucometers. Used alongside a backup fingerstick glucometer for hypoglycemia verification, CGM is the current standard of care for T1D. Prescription required; covered by most insurance for T1D.

How it stacks up

Devices ranked.

The Dexcom G7 CGM (+ backup glucometer) alongside our top picks in devices.

RankDeviceScore
#1
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#2
Contour Next One
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#3
Dexcom G7 CGM (+ backup glucometer)You’re reading
9.6/10Current
#4
Oral-B iO Series 9
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#5
Abbott FreeStyle Libre 3
9.4/10Compare →
9.6/10
Excellent
HealthRankings verdict

The bottom line

For context: continuous glucose monitoring (CGM) has largely replaced standalone glucometers as the primary monitoring tool in T1D — the Dexcom G7 provides a reading every 5 minutes, trend arrows, and alarms without finger pricks. The G7 achieves 8.2% MARD (mean absolute relative difference) — more accurate than most glucometers. Used alongside a backup fingerstick glucometer for hypoglycemia verification, CGM is the current standard of care for T1D. Prescription required; covered by most insurance for T1D.

How we test

HealthRankings buys, tests, and rates devices independently. Our scoring blends quantitative measurements (accuracy vs reference, sample-to-sample variability, fit testing) with everyday usability and cost. We disclose affiliate links and never accept paid placement in our rankings.

Medical disclaimer:Reviews are for general information only and are not medical advice. Always follow your clinician's guidance for diagnosing or treating health conditions. Read full disclaimer