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Basal Testing in Closed Loop!

Here’s a great way to test your basal rates overnight while in Closed Loop.  Keep your Loop closed and set a target override similar to the one in this screenshot.  A wide target range will provide “safety bumpers”.  Loop will only give a correction dose or suspend basal if you fall outside of this wide target range.   Leave your suspend threshold alone, and set the lower end of your override target range about 10-15 points higher than your suspend threshold.  Set the upper end of the range as high as you’re willing to tolerate overnight drift.  For example, while keeping your suspend threshold at 70, set the lower end of the correction range at 80-85 and the upper end around 160-180.  Using a target override for this testing will ensure that your correction range returns to normal at the end of the override duration.

Of course, as with all basal testing, you need to

  • Be within the correction range when you start,
  • Have no carbs on board (COB)
  • Have no insulin on board (IOB)
  • Refrain from exercise
  • Not be on the first day of a new sensor (when accuracy can be off)

 

Absmindedprof shared this method of basal testing using closed Loop on GitHub 

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