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Advanced Calibration

This menu provides some important settings and mechanisms for calibration.

 Settings
 Less Common Settings
  Advanced Calibration

Use Treatment BG values

You can decide to use BG treatments (blood tests) as calibrations.

Use Treatment BG values

 Choose whether to calibrate with the BG value in a Treatments entry

Warning

Always use treatments as calibrations is not recommended.

Automatic mode will only suggest you to use the treatment as a calibration if xDrip+ detects that current conditions are good to calibrate (like BG stable for 20 minutes, low noise).

Use Treatment BG values

 Automatic mode (best)○    
 Ask me every time○    
 Never use them●    
 Always use them○    

It might also suggest to you enable automatic calibration.

It is not recommended to use this feature with G6/G7/1/1+ sensors.

Enable automatic calibration

 Entered blood tests which occur during flat trend periods can automatically be used to recalibrate after 20 minutes. This should provide the most accurate method to calibrate with.

 Do you want to enable this feature?

 NO     YES, ENABLE

Ask me every time will do exactly this every time you enter a BG treatment.

Use BG for calibration?

 Do you want to use this entered finger-stick blood glucose test to calibrate with?

Never use treatments will never use them to calibrate (and will prevent you from transforming a treatment into a calibration).

Automatic Calibration

It is recommended to disable this for G6/G7/1/1+ sensors.

Automatic calibration will accept a treatment as a calibration if it satisfies the conditions of a flat trend for 20 minutes.

Automatic Calibrations

 Calibrate using new blood glucose reading if the conditions appear right to do so without asking confirmation (experimental)

Plugins

Calibration plugins are available in xDrip+, most are not used anymore. If enabled, a plugin acts instead of the standard xDrip+ calibration. The idea was to have a customizable calibration algorithm selection but was never fully implemented. In general, a sensor needing a plugin to be calibrated should be replaced for safety reasons.

SAFETY

Calibration safety mechanisms do not apply to plugins. Using a plugin to bypass calibration failure is dangerous.

Calibration Plugin

 Experimental calibration secondary plugin

Wear extension

Plugins are not fully implemented in Wear. You might see different values on your watch.

Calibration Plugin

 None
 Datricsae
 Fixed slope - DO NOT USE
 xDrip
 Last7Ua

None by default the xDrip+ algorithm is used. Recommended

Datricsae was popular with those in trouble with default xDrip+ algorithm. It requires 8 calibration points (if less than 4 the original xDrip+ algorithm will be used) and has slope limits between 0.5 and 1.7. Its main strength is to remove outliers (bad calibration points) that fall too far out of the calibration line. Once filtered, if the number of calibration points fall below 4 or slope is out of limits, the classic xDrip+ algorithm is used.
Be careful as noisy calibrations might lead to inconsistent results.

Fixed slope is an empty plugin returning slope 1.08 and intercept -5. Do not use it for real BG.

xDrip Original was the plugin equivalent of the xDrip+ algorithm. It doesn't do anything else than the xDrip+ algorithm. There is no added value in using it.

Last 7 unweighted was an early attempt to improve the original algorithm. It requires at least 7 calibrations (if non-existing, current xDrip+ algorithm is used). Not recommended.

Plugin plot on graph

 Show glucose results from the plugin on the main graph

Enable if you want xDrip+ to plot results using the plugin.

Use Plugin Glucose

 Main glucose display number comes from plugin!

Enable if you want the main BG number to be from plugin results. A circled P will show.

Plugin Override ALL

 Main glucose display number comes from plugin!

Not implemented.

Calibrations

Double Calibrations

 Ask for a second optional initial calibration blood test

If you're not actually performing two different blood tests for initial calibration: disable this.

Infrequent Calibration

 If needed, use calibrations from longer ago, e.g. if calibrations are supplies infrequently

Calibrations get ignored when too old, if you calibrate rarely and want older calibrations measurements to weight on the current calibration curve: enable this.

Libre specific

Non-fixed Libre Slopes

Non-fixed Libre Slopes

 Enable to allow variable slopes with Libre collection methods

Libre sensors might be difficult to calibrate. If you cannot manage to get full range accuracy or never calibrate in the higher range, disable this and make the slope equal to 1. This is recommended for beginners.

Always calibrate at stable glucose when in the lower normal range for safety.

Check Libre Serial

 Automatically stop if Libre Serial changes unexpectedly

Carrying forward calibrations from the old sensor to a new one is dangerous. Leave this enabled.

Bypass quality check

Bypass quality check

 Allow initial calibration even if we don't have good enough data. Beware could result in inaccurate calibration.

During preliminary measurements for first calibration, 3 valid measurements are required. If they are missing or fail safety values, xDrip+ will wait. Enabling this will allow calibration without checking. Not recommended.

Collecting Initial Readings

 ✔ Data collector running
 ✔ Receiving data from collector
 ✔ Received some recent data
 ⧖ Received enough good data to calibrate
Need 3 recent readings, got only one so far
 Next reading expected in 1 minute


Last modified 15/12/2024