Bluetooth GATT Characteristic Reference

Glucose Feature (0x2A51)

org.bluetooth.characteristic.glucose_feature

The Glucose Feature characteristic is used to describe the supported features of the Server. When read, the Glucose Feature characteristic returns a value that is used by a Client to determine the supported features of the Server.

Quick Summary

Payload length is 2 bytes. This page is generated from official GATT XML and presented as implementation-ready guidance.

At a Glance

Key reference details for BLE implementation, interoperability testing, and AI-assisted troubleshooting.

Property	Value
Name	Glucose Feature
UUID	0x2A51
Type	org.bluetooth.characteristic.glucose_feature
XML Root	Characteristic
Source File	org.bluetooth.characteristic.glucose_feature.xml
Field Count	1

Field Specification

Parsed field definitions from the source XML value structure.

Field	Requirement	Format	Unit	Exponent	Notes
Glucose Feature	Mandatory	16bit	-	-	-

Bit Map

Bit-level enumerations extracted from the XML BitField definition.

Field	Bit	Size	Name	0 Means	1 Means
Glucose Feature	0	1	Low Battery Detection During Measurement Supported	False	True
Glucose Feature	1	1	Sensor Malfunction Detection Supported	False	True
Glucose Feature	2	1	Sensor Sample Size Supported	False	True
Glucose Feature	3	1	Sensor Strip Insertion Error Detection Supported	False	True
Glucose Feature	4	1	Sensor Strip Type Error Detection Supported	False	True
Glucose Feature	5	1	Sensor Result High-Low Detection Supported	False	True
Glucose Feature	6	1	Sensor Temperature High-Low Detection Supported	False	True
Glucose Feature	7	1	Sensor Read Interrupt Detection Supported	False	True
Glucose Feature	8	1	General Device Fault Supported	False	True
Glucose Feature	9	1	Time Fault Supported	False	True
Glucose Feature	10	1	Multiple Bond Supported	False	True

Byte Layout and Decode

Payload length is 2 bytes.

function decodePayload(dataView, offset = 0) {
  // Parse glucose_feature (16bit) according to Bluetooth format rules.
  return { glucose_feature };
}

Use Cases and Integration Notes

BLE Telemetry

Map characteristic values into dashboards and alerts for device observability.

Firmware Regression

Compare decoded fields across builds to detect protocol or scaling changes.

App Integration

Build stable parsing paths that convert raw payloads into typed app models.

Implementation Checklist

Validate payload length and mandatory fields before decode.
Decode with Bluetooth-specified signedness, unit, and exponent handling.
Convert units at presentation boundaries to avoid drift in business logic.
Persist raw packets and decoded values for reproducible troubleshooting.

FAQ

What is Glucose Feature in Bluetooth GATT?

Glucose Feature is defined as a Bluetooth GATT characteristic entry with type org.bluetooth.characteristic.glucose_feature and UUID 0x2A51.

What UUID identifies Glucose Feature?

The UUID for Glucose Feature is 0x2A51.

How should I parse Glucose Feature?