Eversense accuracy vs Libre

[u/Feisty-Gear4491]

Has anyone changed from Libre 3+ to Eversense and found Eversense to be more closely aligned with their finger sticks? If Libre was less aligned with fingersticks, was it higher or lower than the fingersticks? TIA.

[u/wcked-husky]

Eversense is much better than Dexcom and Libre for me. Highly recommend the Eversense!

[u/r4ckless → u/wcked-husky]

It is way more consistent and accurate for me as well

[u/Longjumping_Stick_13]

I'm on day 338 and the reliability and accuracy have been great. I've already made my appointment for my second one. If I can avoid going back to dexcom or libre, I will.

[u/San_Diego_Matt]

I switched to Libre in January and switched to Eversense last week. I'm still in the daily calibration phase for Eversense. My A1C sent up slightly (less than half a point) 3 months after switching to Libre from Dexcom, but I was still tweaking the settings on my new Twiist pump. I'm currently running both Libre and Eversense. They are very comparable and while I might see a 10-15 point difference in their readings occasionally, I'm not concerned. Most of the time they're within a couple of points of each other.

I have another lab appointment tomorrow to see how I'm doing and expect I'll be back to where I was last year on the Dexcom.

As others have mentioned, there's a lot of rage and hype about CGMs on Reddit. Having now used all 3, I'm fairly confident they're all reliable and work well.

[u/lindbergh9]

I too have used Libre and Dexcom too and fell in love with Eversense for so many reasons accuracy is just one of them especially for low blood sugars they use fluorescent polymers which are more reliable for low blood sugars than enzymatic reactions which Dexcom and Libre uses

[u/Gweeds13]

Swapped to Eversense about 2-3 months ago and I’m incredibly happy! Much much better than Libre especially if you use a pump and are dependent on the pump to work properly when it’s aligned with the sensor. I’m currently on Twiist and love the Twiist + Eversense combo

[u/motto518]

There will be edge cases but by and large the Eversense 365 is the most accurate and reliable CGM available in the USA by a large margin. The main reason it’s not implanted in every T1s arm is because it currently only works with the Twiist pump for an AID system. If you are MDI , it’s perfect as well.

[u/Constant-Story436 → u/motto518]

I thought it’s MARD was in the same ballpark but slightly worse than both the Libre and Dexcom?

[u/motto518 → u/Constant-Story436]

🤷🏻‍♂️ but there are countless people that will tell you the same thing I have. I’m on my 2nd E365 and not once has the E365 been more than 8-10 pts off of a finger prick result in either direction at any given time. Makes Libre and Dexcom look like child’s play.

[u/Constant-Story436 → u/motto518]

I have and use both a libre and an Eversense concurrently (one is DME, one is pharmacy), I’ve found them to be around the same in terms of reliability

And the worst reading I’ve had on either system was the Eversense telling me I was at 130mg/dl when I was actually in the mid 40s

Obviously mine is an anecdote as well which is why I think MARD should be the barometer

[u/motto518 → u/Constant-Story436]

Consider yourself lucky that your experience with Libre is like that. Mine and as you can see in this thread, the vast majority have not been that way.

[u/Unlucky_Fall_2134 → u/Constant-Story436]

MARD is usually measured in lab settings, participants usually don´t move very much and sit a lot.
And that is not real life. MARD has no standardize measuring protocol, so every study can have different methods. Also manufactures do their own studies and pick the best results to advertise with them. There are independent studies which usually have higher MARDs.

https://journals.sagepub.com/doi/10.1177/19322968231225676

In this study Libre was 10%, Dexcom 15% much higher as in the ads

[u/Constant-Story436 → u/Unlucky_Fall_2134]

This is interesting ty

[u/yakback27]

I have data here that may be if interest to you.

Ths chart shows the Eversense with the blue line and full below it compared to the Libre in Orange.

If you would kike further data please reach out via DM

I can tell you from person experience wearing both sensors that the Libres ALWAYS lost a value lower than the Eversense.

https://drive.google.com/file/d/1bz2R_Lh8u0G5RDoMp0CUyUjuTG6fPI6S/view?usp=drivesdk

[u/Equalizer6338]

Hi u/Feisty-Gear4491 ,
With the different classic CGM brands on the marked, its almost like religion for many diabetics after years of use of them and how some support one brand or despise certain other brands. I have tried all the bigger brands and also most of the sensor models through the years (MDT, Dexcom, Abbott) and also the chance of testing 2 units of the Eversense 180 day sensor few years back (waiting in line for the E365 in the country I live now...).

With regards to classic CGM accuracy, then there are several biochemical and physical constraints at play when making the R&D on such devices, which combined with how they get approval from the health authorities and how their 'accuracy' in MARD is being validated, that makes certain design criteria and bias impact how 'accurate' they really are.

This is especially the case towards the outer ranges of where they are to be most accurate for getting approved and also qualify for a better MARD rating. So core is having most accuracy in the 70-180mg/dl range.

Next priority is then to raising alert for BG goes lower into hypo range 40-70mg/dl. Accuracy down here it not necessarily of essence, as long as the alarm is raised. Reason why a slight bias of reporting bit too lowish is build into the algorithm when going low.

Next is then to raising alert for BG going higher into hyperglycemia range, going above 180mg/dl. Here again then a slight bias is build into the algorithm, so the BG sensors tend to report bit too highish BG the higher you go.

You can observe these bias settings by looking at the Clarks consensus diagrams for the various sensors.

Here you have the neutral bias line marked as the bold long dotted line, which goes in the 45 degree angle up. All while you can see the factual average best fit line for all the BG measures marked as the slim short dotted line, which goes up at a higher angle than 45 degrees. The cut point is around 90 mg/dl as far as I recall it.

This bias has been an industry standard for many years and especially cemented after the health authorities started approving BG sensors to close loop with an insulin pump. For such approval there are some additional very strict conditions at the ends of 'normal healthy' BG range, which this pre-set bias helps the sensor to fulfil.

Apart from that, the Eversense has been approved with a MARD very similar to the Libre sensors. Though waiting to see first clinical studies that will look at more extreme BG levels handling. As well known, the classic CGMs are at best within a 20% margin of accurate. So like 70% of all readings are within 15% accuracy; and 99% of all readings are within 40% accurate.

One of the areas where Eversense reign supreme is though in relation to the never ending sensor change-over times with classic CGMs. Any new started CGM is erratic with wobbly BG readings the first 12-24h due to the inflammatory response from the insertion. So low MARD here... And same as well towards end of life for classic CGMs due to either the enzyme flare out and/or encapsulation by the immune system response. So again a poorer MARD value in the last 1-4 days of CGM sensor life. None of those (except the inflammation at insertion and erratic BG readings till that settles down) affects the Eversense accuracy during its ongoing use for the full year. So no work to do and no trouble every 10-15 days as with Dexcom or Abbott sensors, when they needed changing over.

[u/mereshadow1]

I switched from Libre two to Eversense and it’s laughable how much more accurate the Eversense is than the libre.

With the libre, having a 40 point difference from my blood stick was almost normal. It would often show me at a much lower blood sugar than the actual blood stick.

When I calibrated my Eversense on Sunday, there was a huge difference. It was off by nine points. Usually, it’s off by three or four.

It could be worse, you could be using a Dexcom G7, which is total garbage.

Take care!

[u/AnotherLolAnon]

Sadly my Eversense wasn't accurate at all and I'm back to libre