What are the differences between patient and provider CGM exports?

Dexcom Clarity: Dexcom CGMs

• PDF reports exported from the provider clinic portal appear identical to those exported from the patient portal
• Glucose downloads from the provider clinic portal and those exported from the patient portal also appear to be identical

Example CSV Export:

Data columns

"Index","Timestamp (YYYY-MM-DDThh:mm:ss)","Event Type","Event Subtype","Patient Info","Device Info","Source Device ID","Glucose Value (mg/dL)","Insulin Value (u)","Carb Value (grams)","Duration (hh:mm:ss)","Glucose Rate of Change (mg/dL/min)","Transmitter Time (Long Integer)","Transmitter ID"

Notes

Patient's data uploaded from receivers through USB displays in both portals, just like CGM data, when uploaded by the patient. It is unclear if receiver USB data gets sent to the patient side when uploaded by a provider. However, when a sensor is connected to both the app and the receiver simultaneously, even when uploaded from both places, it appears the data is always reported as coming from the app.

When a sensor is connected to both the app and an Apple Watch, readings are reported as coming from the iPhone app whenever the sensor sent readings to the app, or as coming from the watch app if the sensor disconnected from the phone and sent data directly to the watch ("Direct to watch" functionality).

The data is always reported in 5-minute increments whether reported through the provider clinic portal, patient portal, app, Dexcom Share / Dexcom Follow, receiver or Apple Watch app.

The export functionality in both the patient and provider portals appears to export all available data during the specified time frame only. Time frames are limited to 90-day windows (but start and end dates can be selected).

LibreView: Abbott Freestyle Libre CGMs and Insulinx-compatible BGMs

• PDF reports exported from the provider clinic portal can include many additional sections, with some customizable parameters (glucose targets, glucose ranges, time frame up to last 90 days).
• Glucose downloads from the provider clinic portal are almost identical to downloads from the patient portal, with a few differences:
  • The first column and cell = "Patient report" for providers, or "Glucose Data" for patients.
  • "Generated By" = name of the clinician who downloaded the data for providers, or the name of the patient for patients.
  • Provider reports include a 2nd row not present in patient reports, with the patient's name and the patient's date of birth

Example provider-side export:

Example patient-side export:

Data columns for both exports

Device,Serial Number,Device Timestamp,Record Type,Historic Glucose mg/dL,Scan Glucose mg/dL,Non-numeric Rapid-Acting Insulin,Rapid-Acting Insulin (units),Non-numeric Food,Carbohydrates (grams),Carbohydrates (servings),Non-numeric Long-Acting Insulin,Long-Acting Insulin (units),Notes,Strip Glucose mg/dL,Ketone mmol/L,Meal Insulin (units),Correction Insulin (units),User Change Insulin (units)

Notes

Patient's data uploaded from receivers/meters through USB displays in both portals, just like CGM data, whether uploaded by the provider or the patient. It is based on the serial number of the receiver/meter.

Note that, even though Freestyle Libre CGMs provide data to the user every 1 minute, the LibreView exports provide data in 5-minute increments. It is not clear whether the EGV and trend reading is as of the end of each 5 minute window, or the average of the 5 readings during that 5-minute window (would need to test it out with a CGM connected through the app).

The export functionality in both the patient and provider portals appears to export all available data, regardless of the date range selected for reports.

Note that the LibreLink service/API can provide minute-by-minute data, but only for the past 12 hours and only when users are using the app, not the receiver, and have consented to LibreLinkUp / LibreView terms of service.