Blood Sugar4 min read

Logging Blood Sugar

Track fasting, post-meal, and bedtime glucose readings — including automatic import from Dexcom and CGM devices.

Sources:

For informational and educational purposes only. VitalSync is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. All content presents health data against established clinical reference ranges. Always consult a qualified healthcare professional for medical advice, diagnosis, or treatment.

Logging Blood Sugar

VitalSync supports manual blood glucose logging, Bluetooth glucometer pairing, and automatic import from Dexcom and other CGM (Continuous Glucose Monitor) devices via Apple Health.

Manual Entry

Tap Log → Blood Sugar.

Enter your glucose reading (mg/dL or mmol/L — set in Settings → Units).

Select the context: Fasting, Before Meal, After Meal (1h), After Meal (2h), or Bedtime.

Tap Save.

Dexcom & CGM Import via Apple Health

If you use a Dexcom G6, G7, or any other CGM that writes to Apple Health, VitalSync automatically imports your continuous glucose readings.

Ensure your CGM app (e.g., Dexcom G7, Dexcom Clarity) is connected to Apple Health.

- Open the Dexcom app → Settings → Connected Apps → Apple Health → Enable Blood Glucose.

In VitalSync, go to Settings → Health Permissions and ensure Blood Glucose is toggled on.

Tap Force Sync on the Dashboard to pull the latest CGM readings immediately.

Once connected, VitalSync displays your CGM readings alongside manually logged entries, with a CGM source label so you can distinguish them.

Supported CGM Devices (via Apple Health)

Device

App Required

Notes

Dexcom G7	Dexcom G7 app	Writes every 5 min to Apple Health
Dexcom G6	Dexcom G6 app	Writes every 5 min to Apple Health
Dexcom ONE+	Dexcom ONE+ app	Writes every 5 min to Apple Health
Abbott FreeStyle Libre 3	LibreLink app	Writes to Apple Health via LibreLink
Medtronic Guardian	Medtronic app	Writes to Apple Health

Note: VitalSync reads CGM data from Apple Health — it does not connect directly to CGM hardware. Your CGM app must be configured to share data with Apple Health first.

Bluetooth Glucometer Sync

VitalSync also supports traditional Bluetooth glucometer pairing via Settings → Devices → Add Device. Once paired, readings sync automatically.

Target Ranges

Context

Normal (mg/dL)

Pre-Diabetic

Diabetic

Fasting	70–99	100–125	≥ 126
2h Post-Meal	< 140	140–199	≥ 200

Based on ADA 2024 guidelines.

blood sugarglucosediabetesfastingA1CDexcomCGM

Was this article helpful?

Let us know so we can keep improving.

Dexcom & CGM Integration

How to connect your Dexcom G6, G7, or other CGM device to VitalSync via Apple Health.

Projected A1C Estimate

How VitalSync estimates your HbA1c from your logged glucose readings.

Logging a Glucose Reading

Step-by-step guide to manually logging a fasting, post-meal, or bedtime glucose reading in VitalSync, including reading type labels, units, and how entries appear in NeoVital.

Still need help?

Our support team typically responds within 48 hours.

Contact Support