Different Glucose readings from each hand or finger.

By JiMMy DCC Latest Reply 2015-06-16 12:39:48 -0500
Started 2013-04-04 09:46:29 -0500

I've noticed this over the last year mainly. But whenever I check my blood glucose levels my right hand can be 10-20 higher than my left.

And I've even noticed that on checking between fingers on the same hand I can have a 10 value difference.

It doesn't matter if I've washed my hands or used alcohol swabs. It's always this way. And I've found my left hand is more accurate to how I feel.

Has anyone noticed this. Is there reasons behind it. And should I just average between the two. Problem is Incan check more often some days because of the large difference.

18 replies

annastype2 2015-06-16 12:39:48 -0500 Report

I noticed this, too. This morning I got a reading difference of 10 in 2 different fingers. I of course recorded the lowest number, 108. I don't think it's true about inaccurate results in pinky as it still has all the capillaries (tiny blood vessels) necessary for a finger stick. Moreover, the skin is usually thinner on a pinky as well as on a non-dominating hand (left in my case)

srs1960 2013-04-14 16:26:29 -0500 Report

Eat a hand full of nuts should help and or a small piece of cheese . You defiantly don't want to pass out.

flipmom 2013-04-05 18:14:19 -0500 Report

same here… but even though it isnt as accurate, it gives us an idea of where we stand. 110bg to 140bg is totally different from 330bg or 300bg… i hope you get my point…

JiMMy DCC 2013-04-05 20:33:08 -0500 Report

I get the point - but 60 and 120 though is an issue. Correct or eat?

flipmom 2013-04-06 00:41:05 -0500 Report

yes, that is an issue. is the testing in a matter of minutes? if i get 60 the first time, i sure would correct it… i actually feel it when im low… BUT…if your test is that much different within a minute, i would test again, maybe a bad batch…

Nick1962 2013-04-05 15:57:33 -0500 Report

OK, just out of curiosity (and i have strips about to expire) i just test 3 times on THE SAME SAMPLE - 101, 114, 102. All still within the 20% error margin for most meters. It used to drive me nuts, but I've resigned myself that the home use technolgy just isn't that accurate.

JiMMy DCC 2013-04-04 11:44:43 -0500 Report

I have the new Verio IQ and the Bayer meter. On either one I can read from the same finger and each read is +/- 1-3. Yet comparing on the same hand from on finger to the other can be +/- 8-12. And from pinky to pinky +/- 15-25.

jayabee52 2013-04-04 12:15:44 -0500 Report

Jimmy, the purpose of Glucose meters is to get an idea of the way your BG levels are moving so you can take approprite action. So to save yourself frustration, please just pick a place and use that as your spot to be able to tell what your BG levels are doing.

JiMMy DCC 2013-04-04 13:32:13 -0500 Report

The issue I had yesterday is on the left hand I measured 66. Yet on my right I measured from pinky at 104. And the next finger was 92. All readings within 35 seconds of each other. And rechecking the left Pinky it was still 66.

So would you eat something, stay the course or correct? That's the problem. And on can't chec Just my left pinky every day 6 times a day.

Yet on other days I can read same close values no matter what hand or finger.

jayabee52 2013-04-04 13:51:23 -0500 Report

I would in that case stay the course, especially if you were not feeling the effects of a hypo. I would have no idea why your pinky would read like a hypo. Do you have a limitless box of testing strips?

JiMMy DCC 2013-04-04 13:58:14 -0500 Report

No - my Dr Prescription for now is 4-6 times a day. But in started charting the differences between left and right. But can't find a reason for the dramatic swings. And I'm starting develop some unawareness when I drop low. So when I see a 66 and 104 who do I believe is correct?

jayabee52 2013-04-04 14:06:53 -0500 Report

I am going to share what I would do: I would avoid the finger I knew would automatically give me a low reading and stay with the middle fingers. I rarely use my pinky anyway as I have trouble getting blood out of it. I just follow the trends on those fingers and take action based on that.

Nick1962 2013-04-04 11:12:50 -0500 Report

I've had a 25 point disparity. In addition to Jigsaw's response I'll add that your blood may not be consistently "mixed" as it runs through your body either.

jigsaw 2013-04-04 10:15:53 -0500 Report

This question has come up a few times in the past. Meters have a 20% +/- error margin. This explains most of the difference. Manufacturers should be tightening up on the specs in due time. You can look up some of the responses in previous discussions for additional insight. Meters are simply a tool to help you manage your blood glucose more accurately and efficiently. A1c and blood tests by medical professionals are still a necessity, and the most accurate way to really know how well your managing your diabetes.

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