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Expert Review

Dexcom G7 CGM (+ backup glucometer)

Best Overall System — CGM is Standard of Care for T1D

HR
HealthRankings Team Reviewed by Dr. Maria Santos, MD
Rank #2 of All Glucometers & CGM
Score 9.6/10
Price $89/month (insurance often covers)
Rating Outstanding
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9.6
/10
HealthRankings Verdict
Dexcom G7 CGM (+ backup glucometer) — Best Overall System — CGM is Standard of Care for T1D
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.

What We Liked & What Could Be Better

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

Limitations

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

At a Glance

TypeCGM (continuous — not fingerstick)
MARD8.2% — clinical grade
ReadingsEvery 5 minutes
AlarmsHypo + hyper
IntegrationTandem Control-IQ AID system
PrescriptionRequired

The Bottom Line

9.6/10
Outstanding — All Glucometers & CGM

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.

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Medical disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or qualified health provider. Read full disclaimer