Calculation of Glycosylated Hemoglobin in Free Style Libre

How is it possible that on my cell phone I get a hemoglobin of 5.9 and on Libreview it gives me a value of 6.3, for the last three months???

The phone with which I take the measurements is supposed to send the information to Libreview, which in turn passes it on to the hospital and to me if I want to connect.Where is the difference in the data?

JuanSolo said:
@JuanSolo said:

How is it possible that on my cell phone I get a hemoglobin of 5.9 and on Libreview it gives me a value of 6.3, for the last three months???

The phone with which I take the measurements is supposed to send the information to Libreview, which in turn passes it on to the hospital and to me if I want to connect.Where is the difference in the data?

It also varies for me, in my case it makes sense because in Libreview I have capillary measurements by connecting the glucometer to the computer from time to time.

In libreview, if you look at the fine print on the AGP report page, it refers to how the data is obtained.

There is the reference to a 2019 international consensus report " Link (in English).

If in that report you look for how GMI (glycosylated equivalent) is calculated, you come to studies where, based on statistical correlation based on data from several clinical studies, they arrive at the formula:

GMI (%) = 3.31 + 0.02392 × [mean glucose in mg/dL]

(mean glucose = average glucose)

You have a "calculator" at the link " Link where you put the average glucose and you get GMI

The glycosylated that appears in the freestyle application uses a different formula based on a 2008 study. It is in the application's help manual:

A1c% = (Avg SGmg/dl + 46.7) / 28.7

Avg SGmg/dl is the average glucose for the last three months (or the most you have saved)

Today I went to the Endocrinologist, they performed a capillary glycosylation on a Siemens device.The result was 6.1.

On the sensor it was 5.9 and Libreview 6.3.

More or less approximate values.Although the difference is curious.

Last month I also had my hemoglobin g tested.in consultation.And it also coincided quite a bit with libreview.

Congratulations on that hemo, @JuanSolo.Mine as always bordering on 7 😕, 6.8.I've been like this for 24 years, there is no way to lower it!!

Well, Diabox nails it for me, they do weekly analyzes for me.

I went from 5.7 in September to 6.9 yesterday 🤬🤬🤬🤬🤬🤬🤬🤬🤬 the corticosteroids.

I've been below 6 years... I'm mad.

LibreView gives me 6.8, Librelink 6.8 and Diabox 6.9.

By the way, don't you find it curious that LibreLinkUp has a warning message saying that these values ​​cannot be used to make treatment decisions, but in LibreLink, from which it takes data, it doesn't warn you about anything?

Anaisabel said:

@Anaisabel said:

Last month I also had my hemoglobin g tested.in consultation.And it also coincided quite a bit with libreview.

Congratulations on that hemo,@JuanSolo.Mine as always bordering on 7 😕, 6.8.I've been like this for 24 years, there is no way to lower it!!

Thank you.The fundamental thing is to learn a lot, by yourself and even better with a good diabetes education.

Anaisabel said:

I'm already 40. I started as a child and when I was 8 or so I didn't lose weight.But as I got older I dropped to 7 and even less.And with the sensors I try not to reach 6...I like to set goals.We can always improve a little more.Without depriving ourselves of anything.

@Ruthbia said:

Well, Diabox nails it for me, they do weekly analyzes for me.

I went from 5.7 in September to 6.9 yesterday 🤬🤬🤬🤬🤬🤬🤬🤬🤬 the corticosteroids.

I've been below 6 years... I'm mad.

LibreView gives me 6.8, Librelink 6.8 and Diabox 6.9.

By the way, don't you find it curious that LibreLinkUp has a warning message saying that these values ​​cannot be used to make treatment decisions, but in LibreLink, from which it takes data, it doesn't warn you about anything?

Ruthbia said:
@Ruthbia said:

Well, Diabox nails it for me, they do weekly analyzes for me.

I went from 5.7 in September to 6.9 yesterday 🤬🤬🤬🤬🤬🤬🤬🤬🤬 the corticosteroids.

I've been below 6 years... I'm mad.

LibreView gives me 6.8, Librelink 6.8 and Diabox 6.9.

By the way, don't you find it curious that LibreLinkUp has a warning message saying that these values ​​cannot be used to make treatment decisions, but in LibreLink, from which it takes data, it doesn't warn you about anything?

And you have no way to anticipate the effect that corticosteroids have on you?

I don't know very well how they work, but if you take one and its effect lasts 24 hours, raising the insulin slowly would be enough.Or if the effect lasts a few hours, be quick.Another option is to continually correct yourself with ultra-rapid insulin, but then you are already late.You will have to adapt, there is no other option.

As for the messages, I suppose they are the typical messages to avoid legal responsibilities.They are two programs and they may have been created by different teams.

JuanSolo said:
@JuanSolo said:

Today I went to the Endocrinologist, they performed a capillary glycosylation on a Siemens device.The result was 6.1.

On the sensor it was 5.9 and Libreview 6.3.

More or less approximate values.Although the difference is curious.