Freestyle libre reading vs lab result

Posted by jdiakiw @jdiakiw, Nov 5, 2020

As I sat while the lab technician drew blood for testing I scanned my freestyle libre scanner. My scanner read 6.5 mmol/l. When the blood results came from the lab, the blood sample reading was 9.1 mmol/l. Is that a normal difference or can I not trust my ‘freeStyle ‘ system ?

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@scottzee

I can buy a LIBRE sensor for $38 for 14 days. I am not on insulin and I don’t ever want to be either . Insurance won’t cover it for me since I’m not an insulin user, but it does give me valuable information so it’s worth the cost . So I use the monitor to see what foods set off bad reactions. I definitely see how changes in your diet can improve your overall diabetic health and this is one tool to help you get there.

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Please share where you get $38 libre 14 sensor ..
Thanks🙏🏼

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You have to know that the Freestyle Libre (and all other meters) are about 15-20 minutes behind what a finger stab will tell you. Helps to know this.

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I just want to reiterate that the Freestyle Libre isn’t really a meter at all. There basically are two types of devices to use at home. Glucometers are meters that test the blood sugar with a finger prick. Continual Glucose Monitors (CGM) are devices that are inserted into the interstitial fluid to monitor glucose there and are worn continuously. The two readings should be comparable but there can be a lag between the two numbers (like what @ksdm described). I was told to think of it like a rollercoaster. There is a difference between the head and the tail at any given time but eventually the ride ends up in the same place. I personally use a Dexcom G6 CGM. If I have any concern about high or low values I verify what my condition is by doing a finger stick with a glucometer. The glucometer is accurate for that point in time. The CGM can help to identify trends and patterns over time.

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@aak13

Please share where you get $38 libre 14 sensor ..
Thanks🙏🏼

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I was getting it at a local pharmacy. Unfortunately they made a mistake for 5 months thinking I had insurance to help cover the costs at 38 dollars. Suddenly they wanted me to get a reauthorization from my doctor to the insurance company. They otherwise would charge me $93 dollars. I could get a discount on it from Abbot, but it would still cost me over $75 dollars. I can’t afford it at that price. So I guess I was lucky enough to get it for less for 5 months and will use the knowledge to get a decent A1C . I can’t use insurance because I don’t use insulin. They don’t want to help with healthy people stay healthy… A bigger problem than I can solve….so back to finger sticks

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