CGM Model Added to Inform API

On 01/14/2025 the following resource change will be made to the Inform API.

New Resource:
Dexcom CGM

Deprecated Resource:
Dexcom Intraday (support will end July 15, 2025)

Affected Action:
Receiving High-Frequency Dexcom Data

The following integrations will support this resource:

Integration	Device	Metric
Dexcom	Dexcom G6 CGM System, Dexcom G7 CGM System	blood_glucose
Abbott	Abbott Freestyle Libre 2 CGM System, Abbott Freestyle Libre 3 CGM System	blood_glucose

What To Expect:

Same Data Delivery Schedule: No changes will be made to the delivery schedule for Dexcom records. Dexcom high-frequency data will continue to be reported hourly with a one-hour delay from Dexcom.
New Data Format: The CGM resource utilizes a different data model than Intraday. Familiarize yourself with the new structure outlined in the provided examples and documentation links.
Cumulative Updates: Each CGM record for a given UTC day will be cumulative, including all time/value pairs for that day, with the record size growing until the day ends.
Checksum Identification: Use the "checksum" field to track updates to a CGM record throughout the day.
More Time Details: Inform receives two representations of time from Dexcom (time and display_time) and both are reported for each CGM reading value. Also, the top-level of the CGM record includes start_time and end_time fields that define the UTC day that the CGM record represents.
Duplicate Records: From January 14, 2025 through July 15, 2025, both CGM and Intraday records will report the same Dexcom high-frequency readings if your stream configuration sends both event resource types.

For more information: