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-   -   Methinks my BG meter is trash (https://www.diabetesforum.com/diabetes/99005-methinks-my-bg-meter-trash.html)

ToddAndMargo 01-13-2019 23:14

Methinks my BG meter is trash
 
Hi All,

I have a Walmart Relion Micro Blood Sugar Meter. Recently Walmart stopped carrying supplies for it. So with the help of this group, I found test strips that will work with it from Arkray through Adw:

https://www.adwdiabetes.com/product/...se-test-strips.

When I got my new strips, I decided to compare the old Walmart strips against the new ones from Adw:

First blood drop (mg/dl):
112 Walmart
101 ADW

Second blood drop:
104 Walmart
103 ADW

Third blood drop (reversed order):
92 ADW
150 Walmart


Methinks my BG is probably 105 mg/dl, but ...

Me also thinks I need a new Blood Glucose meter. Anyone have a favorite simple (no history, no usb, no bluetooth) meter that is dead nuts accurate?

Many thanks,
-T

itissteve 01-14-2019 03:09

When they're manufacturing thousands or millions of strips, it's possible to run across a few duds. Was the blood sample big enough to measure three times? Or were there three samples? If there were three samples, my money is on a bum Walmart strip. It happens. When I get a number that far out of whack, I test again just to verify. But you probably already know that. :smile2:

As for simple meters, mine is pretty simple. It's a Target meter made by Agamatrix, their Presto model in Target Red. Since Target sold its pharmacies to CVS, my meter is no longer available new but strips are widely available from ADW as well as other places on-line because the Presto is still available and Agamatrix manufactures under other brand names, including CVS, Kroger, Meijer, and medical-supply houses/pharmacies provisioned by Perrigo.

No USB (you could buy an expensive cable for it; I didn't think twice about doing that); no Bluetooth; but it does have a history of several dozen readings (can't think of a meter that doesn't atm). Under (sometimes well under) $20 any place you can find it. And though solid testing of meter accuracy is hard to come by, Agamatrix seems to do as well as some Contour meters in the accuracy department. The government gives manufacturers 15% leeway on readings anyway. And I figure the sample process has so many potential flaws that chasing the absolute most accurate meter really shouldn't give you that much more confidence in the number you get. But that's me.

ToddAndMargo 01-14-2019 03:31

Quote:

Originally Posted by itissteve (Post 1315323)
When they're manufacturing thousands or millions of strips, it's possible to run across a few duds. Was the blood sample big enough to measure three times? Or were there three samples? If there were three samples, my money is on a bum Walmart strip. It happens. When I get a number that far out of whack, I test again just to verify.

Three blood drops. The first two drops went to Walmart first and ADW second. The third drop went to ADW first and Walmart second. There was lots of blood leftover.

The occasional bad test strip does make sense. If I get a low reading or high reading, I should retest.

Methinks I will get some test solution too.

Thank you!

mbuster 01-14-2019 15:03

Some strips may get reagent in the sample you left on your finger that could affect the next reading taken from that drop, even from the same meter. Not saying that is what happened, but it could have been.

div2live 01-14-2019 16:20

A key point here, which I repeat is that meters and strips are not totally accurate. They may vary by as much as 15%.

Therefore, take that into account when following your blood sugars. If you assume a + or - variance and adjust your carb intake and/or insulin to take into account these possible variances. In that way you can manage you blood sugars safely...

ToddAndMargo 01-15-2019 13:44

Quote:

Originally Posted by div2live (Post 1315349)
A key point here, which I repeat is that meters and strips are not totally accurate. They may vary by as much as 15%.

Therefore, take that into account when following your blood sugars. If you assume a + or - variance and adjust your carb intake and/or insulin to take into account these possible variances. In that way you can manage you blood sugars safely...

Thinking about this, if the meter was inaccurate, it would still be repeatable. It would give you the same bad reading over and over.

Look at:
https://diatribe.org/are-blood-gluco...data-18-meters
"Walmart ReliOn Confirm (Micro) from Arkray 97%".

That would mean that a reading of 100 could be 97 to 103 (or 94 to 100 or 100 to 106).

This is not the 15% you mention. That must be the aggregate for all meters out there, which would make sense from tests I have seen.

Your remark about leftover reagent does make sense, except for the 92 to 150 swing. That has to just be bad strips. I also noticed that the 150 reading was after the blood droplet had started to dry out.

So, I do believe the take away from this is that is it doesn't look right, suspect a bad test strip. And test immediately.

Today's was 119 and 121 from the same droplete, which is within the 97% margin.

Thank you all for the help!
-T

Cassie2922 01-15-2019 16:02

Did your meter come with a control substance for testing accuracy?

ToddAndMargo 01-15-2019 16:06

Quote:

Originally Posted by Cassie2922 (Post 1315387)
Did your meter come with a control substance for testing accuracy?

No and I am thinking it is a really, really good idea to get one. ADW sells one for my test strips.

https://www.adwdiabetes.com/product/...lution-level-1

Infinite 01-19-2019 02:19

I always wondered the same, I have two Tru Metrix, purchased one at Walmart the other at Walgreens. Walgreens has logo on meter. Sometime last year, I use both at same time, Walgreen brand revealed 142 and Walmart brand revealed 112. So, I drove to local fire station, no joke. Asked if they could test my numbers vs my meter, at same time. Once again different readings, wish I could remember results, it was like +/- 20 difference, I was surprised and so was tech. Most accurate I've always used was AccuChek brand.

ToddAndMargo 01-19-2019 02:21

Quote:

Originally Posted by Infinite (Post 1315515)
I always wondered the same, I have two Tru Metrix, purchased one at Walmart the other at Walgreens. Walgreens has logo on meter. Sometime last year, I use both at same time, Walgreen brand revealed 142 and Walmart brand revealed 112. So, I drove to local fire station, no joke. Asked if they could test my numbers vs my meter, at same time. Once again different readings, wish I could remember results, it was like +/- 20 difference, I was surprised and so was tech. Most accurate I've always used was AccuChek brand.

Like me, it would be a good idea to get some test solution.


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