Hi Andy and welcome! First let me tag in @daisy1 for her useful info post.
Can you give us the numbers you have had for your various tests to help us explain the numbers please? The diagnostic test is usually an HbA1c which is a clever test which measures your average blood sugar over the previous three months, it’s usually quoted as mmols/mol but the older unit used is a percentage. The finger prick tests, which are a snapshot of current blood sugar are measured in mmols/litre.
Metformin takes a while to build up in your system but will only help a tiny bit, you need to adapt your diet too. This is where your testing is useful, you need to test before eating and two hours afterwards to see which foods your body can tolerate.
You obviously need to cut out or reduce hugely sugars but also carbohydrates as they all turn into sugar once eaten.
Hi AndyI've just joined the "club" as a type 2 diabetic, with lots of info from my GP's practice but some advice would be welcome.
I've invested in self test meter but the readings it gives me are typically 50% higher than the diagnostic test results from the clinic. Is this normal?
Also when is the best time to take a reading - I'm not looking to stab myself too often and for the moment I'm doing it daily after I've walked the dog but before I eat any breakfast. Should I choose a different time?
Finally, I've been prescribed Metformin, how quickly would this start to have an effect on my blood sugar?
Cheers
Andy
As my recently Dublin trained MD said, "finger pricking is a complete waste of time." It does not show how high or when the spikes occur and it does not show the latest trend in your glucose levels.
Also looks like you are having success with a low carb diet? Well done.i would agree with most all you say there, @Stephen Lewis
congratulations on your journey so far.
but wouldn't, agree regarding this.
while the cgm may give a clearer trend view of the bg over many hours, the units are a serious expense in themselves..(unit and sensors)
not so bad if you can afford, ( most T2D's uk, rarely get any assistance from doctors, even getting a limited supply of test strips for meters as per nice protocol seems to be a real hassle.)
but to say finger testing is of no use, goes against all the logic i have seen on here from others and personally.
i hear that it's the view of a doctor, but it's not clear if that is also your personal view,
perhaps you wouldn't mind clarifying that for us ?
i think to offer that statement, unqualified as it stands, to any t2d on here could mean at best confusion as it's the first thing many suggest newbies do,
and at worst risks deterring them from testing at all.
i may have misread that statement, apologies if i have.
health care in canada may be more user friendly regarding testing kits
we all come on here, being pro active and looking for a way to improve our health,
advise not to test as it's useless, is not in there best interests, i believe.
Hi AndyI've just joined the "club" as a type 2 diabetic, with lots of info from my GP's practice but some advice would be welcome.
I've invested in self test meter but the readings it gives me are typically 50% higher than the diagnostic test results from the clinic. Is this normal?
Also when is the best time to take a reading - I'm not looking to stab myself too often and for the moment I'm doing it daily after I've walked the dog but before I eat any breakfast. Should I choose a different time?
Finally, I've been prescribed Metformin, how quickly would this start to have an effect on my blood sugar?
Cheers
Andy
I agree that the CGM sensor units are expensive. About $200 per month here in Canada but certainly in my case the benefits have been significant. Earlier this year I was able to buy the sensors for a few 2 week periods. There was a big difference in my bg levels between the CGM and finger pricking. The latter was done 10 to 12 times a day and it was still impossible to tell when spikes were occurring. This information is essential because we each have a different reaction to the same foods and we need to find out what items should not be eaten, which should have reduced amounts and those that are OK. I have been lucky since my health benefit provider (through my pension plan) have just approved the Freestyle Libre paying 70% of up to $90 per sensor.
It was definitely a fully qualified (UK) MD, my family doctor, who said that finger pricking was a waste of time because unless this is done before and then every half hour after eating it is virtually impossible to know when spikes occur and how high they go. The test strips and/or the meters are not very accurate, with a variance of up to 15%. This is potentially a significant difference. In the range that we usually aim for 6.9 could really be 7.9 which is 0.9 or 11% above a maximum pre-meal target of 7.0. At the other end someone could have reading too high when they are actually becoming dangerously low. The Freestyle Libre, if I remember correctly, averages 97% accuracy in a range from about 4.0 to 13.0. If a reading is getting close to these, the meter advises that a blood test should be done.
A couple of month back I did comparative tests with finger pricking for my old meter and strips and the Freestyle Libre test strips and 10 minutes later a reading from the FL sensor. The old meter averaged about 0.5 higher than the FL using blood from the same finger prick. The Bayer test was higher by over 1.0 a few times during the week of comparisons 10 times a day. The sensor reading never varied by much more than + or - 0.2 from the FL blood test 10 minutes before. Using the sides of each finger at least once a day caused some bad soreness after a few days. Several months ago I tested the Bayer system with consecutive tests from the same site. The difference between the tests with a relatively new meter was 1.5.
Sorry to give so much detail but I think you can see what is behind my opinion. I have not been able to find any independent research into the various testing methods. The only thing that seems certain is that doctors rely only on the A1c and it is up to us to each find out what works best in helping us control our condition.
It was definitely a fully qualified (UK) MD, my family doctor, who said that finger pricking was a waste of time because unless this is done before and then every half hour after eating it is virtually impossible to know when spikes occur and how high they go. The test strips and/or the meters are not very accurate, with a variance of up to 15%. This is potentially a significant difference.
In the range that we usually aim for 6.9 could really be 7.9 which is 0.9 or 11% above a maximum pre-meal target of 7.0. At the other end someone could have reading too high when they are actually becoming dangerously low. The Freestyle Libre, if I remember correctly, averages 97% accuracy in a range from about 4.0 to 13.0. If a reading is getting close to these, the meter advises that a blood test should be done.
This is true. I have tried finger pricking two different target areas one after the other and there is always a slight difference in the readings up or down. Finger pricking gives a rough idea of what is going on at any one time and should only serve as a warning to adjust meds or diet. The Hba1c is as accurate as it gets, but even that isn't perfect.Whilst broadly you are right that the libre tells you more than fingerpricking and fingerpricks aren’t totally accurate I think you’re overstating the case somewhat here.
Yes fingerpicking meters are a bit inaccurate, but not so much as they’ll show dangerously low numbers as high ones.
You don’t have to know exact numbers or exact peaks for them to be useful. The majority of us in here have used them to to identify which foods take us significantly higher than others. This is extremely useful and positive and has been the prime tool in our box for information and motivation and reassurance. A specific testing routine gets the most from them. Before and after meals being the main one to get usable actionable information. Fasting is nice to see progress but less you can take less direct immediate action on that one
Not everyone can afford the sensors and a meter is a pretty **** good second option.
The Hba1c is as accurate as it gets, .
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