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how to calculate A1c by using Freestyle libre 14 day sensor

O

ozzie1973

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I am new to Freestyle Libre 14 day system. How do I calculate my a1c?
I have been searching far and wide but no luck. Do I use daily reading to calculate this value? I have the Librelink on my iPhone but I don't see an option to find my A1c.

Thanks
 
Librelink calculates it for you (at least it does on my Android phone - I would hope the iPhone version has it as well, but I don't have one to test it on)).
In the menu select the 'Estimated A1C' option and it shows you it's estimate based on the last 90 days readings.
 
ozzie1973 said:
I am new to Freestyle Libre 14 day system. How do I calculate my a1c?
I have been searching far and wide but no luck. Do I use daily reading to calculate this value? I have the Librelink on my iPhone but I don't see an option to find my A1c.

Thanks
Click to expand...

Ozzie, the Libre does an A1c estimate on it's own. How long have you been connected, so to speak? It takes a few days to build up the starting data.
 
I just googled this piece of kit. It looks interesting.
 
ozzie1973 said:
I have 12 days of data. But the link to calculate a1c is not showing on my iPhone.
Does it show up after 90days?
Click to expand...
Hi @ozzie1973 . I have a few questions if I may.

This is a throw away item after 14 days?

Does it come with its own scanner and if so why the need for a smartphone?

Also how frequently can readings be taken?

Also @Rokaab

Thanks.
 
Listlad said:
This is a throw away item after 14 days?
Click to expand...
Yes each sensor lasts 14 days at which point you can throw it away (note: I think the US ones only last 10 days unless theyve changed, but can't confirm) and need to use a new one.

Listlad said:
Does it come with its own scanner and if so why the need for a smartphone?
Click to expand...
Yes there is a Libre reader(which has to be bought separately and lasts as long as any other electronic device), you can use either the scanner or phone or both (but they will not talk to each other, so if using both you still need to scan with each at least every 8 hours). I find the libre reader more discreet and faster to use but the info on my phone is displayed better and has the extra feature of estimated A1C - so I use both.

Listlad said:
Also how frequently can readings be taken?
Click to expand...
As often as you like, I'm currently averaging about 20-25 a day
 
Just to add, if you use a reader and upload to Libreview it calculates A1c as part of the reports you get there.
 
Rokaab said:
Yes each sensor lasts 14 days at which point you can throw it away (note: I think the US ones only last 10 days unless theyve changed, but can't confirm) and need to use a new one.


Yes there is a Libre reader(which has to be bought separately and lasts as long as any other electronic device), you can use either the scanner or phone or both (but they will not talk to each other, so if using both you still need to scan with each at least every 8 hours). I find the libre reader more discreet and faster to use but the info on my phone is displayed better and has the extra feature of estimated A1C - so I use both.


As often as you like, I'm currently averaging about 20-25 a day
Click to expand...

Thanks. I swear I saw someone wearing one of this very recently. I assumed it was a smoking patch or something. :)

What a great bit of kit!

Does the scanning work a bit like the process of Applepay or similar?
 
Listlad said:
Does the scanning work a bit like the process of Applepay or similar?
Click to expand...
Dunno, never used ApplePay :)
With the reader all you need to do is press the on button and hold it vaguely near the sensor, and it then buzzes (or beeps - dependent on your settings) to let you know it's read it, and then it displays the reading.
My phone is a lot more faffing about, I have to open the app then hold it near the scanner (much closer than the reader needs to be) and wait for it to read it (2 buzzes/beeps) - though a friend with a Samsung just holds his phone near the sensor and it automatically opens the app and reads it - my phone is older and a cheaper make.
 
Rokaab said:
Dunno, never used ApplePay :)
With the reader all you need to do is press the on button and hold it vaguely near the sensor, and it then buzzes (or beeps - dependent on your settings) to let you know it's read it, and then it displays the reading.
My phone is a lot more faffing about, I have to open the app then hold it near the scanner (much closer than the reader needs to be) and wait for it to read it (2 buzzes/beeps) - though a friend with a Samsung just holds his phone near the sensor and it automatically opens the app and reads it - my phone is older and a cheaper make.
Click to expand...
Applepay does work like that. There is a chip or something on the phone that senses the shop device and then prompts the phone user. So it seems it might well work the same way.
 
I don't use a phone at all. I just use the reader as it is discreet and fits in a pocket. I use the Freestyle Libre software that is free. You scan as often as you like, and also the sensor takes readings every 15 minutes throughout the day and night for the whole 14 days. You can export these readings in text and convert to excel format. So you see at a glance all your readings, every 15 minutes, for the whole fortnight. As long as you scan at least once every 8 hours, all will be well. You do need to bear in mind that they are not as accurate as they could be.
 
They are £57 on the Libre website. They look expensive though tempting.
 
Listlad said:
They are £57 on the Libre website. They look expensive though tempting.
Click to expand...

Check if that includes VAT.
At ASDA they are about £46 with no VAT.

Edit: Ooops! Old thread.
 
Listlad said:
Also how frequently can readings be taken?
Click to expand...

The sensor is taking a reading every minute and stores them within itself. It can only store 8 hours worth so the scanner or mobile phone has to be used at least once every eight hours to download those readings, just by bringing the scanner or mobile phone within a few centimeters of the sensor. It uses Near Field Communication to pass the data and there has been a rumour for some time that they will start to use Bluetooth to communicate between sensor and scanner/mobile. If you forget which I have done, especially at night, it just overwrites the oldest entry so you always get the last eight hours worth of one minute readings.
 
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