Hi All,
I am trying to understand if the sensor behavior during day 1 is expected. Day before, I changed my sensor around 8 pm, I inserted the sensor in my right arm. CGM reading was spotty as expected but around 6 am next day I got up because of urgent low alarm. CGM reading was 55 but was 110 in blood. Later in the morning cgm reading was 140 but 110 in blood. This was almost 12 hrs after insertion. Following is the graph
I dont see this level of inaccuracy and this late(12 hrs in this case) often, but, at times, i do see sensor readings way off than what i normally observe for more than a day after which the accuracy improves.
Questions:
Prakash
I am trying to understand if the sensor behavior during day 1 is expected. Day before, I changed my sensor around 8 pm, I inserted the sensor in my right arm. CGM reading was spotty as expected but around 6 am next day I got up because of urgent low alarm. CGM reading was 55 but was 110 in blood. Later in the morning cgm reading was 140 but 110 in blood. This was almost 12 hrs after insertion. Following is the graph
I dont see this level of inaccuracy and this late(12 hrs in this case) often, but, at times, i do see sensor readings way off than what i normally observe for more than a day after which the accuracy improves.
Questions:
- I understand cgm readings can be inaccurate during the first day, but is this level of inaccuracy expected? Also is it normal for inaccuracy to persist for more than 12 hrs since insertion. I have read about 'soaking the sensor' for ~12 hrs to reduce cgm inaccuracy during day1, would like to know your experiences if this helps.
- I know that other factors that can contribute to cgm inaccuracy are sensor insertion closer to muscle, dehydration, I was wondering if cgm inaccuracy can be caused by rolling over the sensor during sleep as a result applying pressure on the sensor?
- How do we differentiate a sensor that starts way off but eventually becomes accurate after a day or two vs bad insertion site or bad sensor?
Prakash