Meter's accuracy

By evaziem Latest Reply 2016-08-08 17:49:32 -0500
Started 2014-05-30 16:53:49 -0500

I've read this 2009 article here that FDA promises us ACCURATE METERS but nothing happened.

My insurance switched me from Accu-chek to Prodigy.
I have been using both, now close to 100 data points.
I see a huge difference from the same puncture, up to 20 unites and once 40.
The Prodigy is ALWAYS higher.

Was thinking to plot these data points and send with a letter to FDA, ADA and whom you could suggest.

What is we are to do?

Anybody knows which meter gives us the correct readings?

Tags: meters

49 replies

Grandmama16 2014-06-05 20:07:45 -0500 Report

Type 1 grandson said he only uses Accucheck but has been told it can be off by 20 points. Next time I see him I might see how my Breeze 2 and Wallmart brand compares. M.A.

Type1Lou 2014-06-04 13:52:46 -0500 Report

A 20% margin of error is considered acceptable by the FDA in approving meters for use. It is not unusual, nor should it be surprising to get different readings from the same puncture. If you use a meter to test your BG and also use a CGM (Continuous Glucose Monitor), they will rarely match up. Medtronic put out a video explaining why this is the case… found it very enlightening. I remember my Dad testing his BG via urine tests back in the 1950's and 1960's and I'm happy we have the meters and other newer technology to help us better manage our condition.

Grandmama16 2014-06-01 13:16:50 -0500 Report

Very good idea to let someone in authority know this . I'll ask type 1 grandson if he has used 2 meters and if they differ. Thanks for posting this.

Grandmama16 2014-05-31 14:06:45 -0500 Report

I use 2 meters…Breeze2 is covered by Medicare for ONLY one test per day so I bought the ReliOn Prime for other times. I don't know how to compare it to my A1C which is 6.6. The ReliOn does have an average given but that's not the same. I'm type 2,diagnosed 2 years ago. I take 2000 mgs of Metformin which I worked up to but still get high numbers at night, over 200, at least 2 hrs after eating. Last night only 149 tho. I think I'm wrong in not eating much during the day but the only things I want to eat are carbs. Fruits would be fine but bother my IBS. I do have string cheese available but get sick of it…sick of everything. BUT, not losing weight. I'm 5'3", down from 5'4", and in the 160 range. I'm 70. I take a bunch of vitamins…some recommended for lowering BG, milk thistle, cinnamon, and Cromium. Now CoQ10 and LCarnitin from older son. Still, all of it can be pricey and what's helping and what's not? Dr pres 40,000 units of vit D a week. I just got frustrated so ate 1/2 a choc covered donut that hubby bought for a church picnic tomorrow. I can only imagine what 24 yr old grandson goes thru being type 1 since 17 and a bout with menengitis. Yet, he's strong and buff. Sigh. M.A.

Type1Lou 2014-06-04 14:06:07 -0500 Report

Per the chart in Gary Scheiner's "Think Like a Pancreas" an A1c of 6.6 would translate to an average BG reading of 135mg/dl to 140mg/dl or around 7.5 mmol. It's a great book with lots of information. I limit myself to 120 grams of carb per day. My last A1c was 6.8. I'm soon to be 65 years old, 5'3" and weigh 120 lbs.

evaziem 2014-05-31 15:13:55 -0500 Report

Look into Medicare Advantage program, like Humana.
It's a better version of Medicare and pays for more.
It has an additional monthly premium of $49.

Type1Lou 2014-06-04 13:59:22 -0500 Report

I just joined and elected Humana's Medicare Advantage PPO. My endo needs to secure special authorization from Humana for me to get the amount of strips that I use. I test 8 times per day since I'm on an insulin pump and find it is necessary for me to do it this frequently to maintain control. Still waiting to see how that authorization works out

evaziem 2014-05-31 15:11:15 -0500 Report

To lose weight, stop all grains…
I did.
I am your height and 116lb.

Grandmama16 2014-06-02 01:43:04 -0500 Report

Hi…thanks for your reply. I eat only toast for breakfast. Would love to eat more. :) No rice or pasta. A little potato but that's not grain. Very little, if any, baked products. My big problem is popcorn. It helps any acid reflux in the eve. What else would be grain? Can't think of anything else. M.A.

evaziem 2014-06-02 08:59:15 -0500 Report

Any products containing the be below is grain or grain-related:
Brown Rice
Bulgur (Cracked Wheat)
Corn (incl. Popcorn)
Farro / Emmer
Kamutr Grain
Oat Bread
Oat Cereal
Rolled Oats
Wheat Cereal Flakes

Grandmama16 2014-06-04 15:13:25 -0500 Report

Darn, I take flax oil instead of fish oil now. No grain would take care of anything baked too. I can't afford those alternate flours. I have a friend who's grand daughters have Celiac and one born with diabetes too so I know the restrictions. Very heavy duty.
I don't bake much anymore tho except pNut butter cookies, no flour…just 1 cup PNut butter, 1 egg and 1 cup sugar or less of a cup of Splenda. Then there are egg white cookies too. Everything just too much trouble. Am trying to exercise now but so far just in little bits of time. Time to yell at myself again.

evaziem 2014-05-31 15:08:31 -0500 Report

For IBS, try probiotics in supplements or better sauerkraut and pickles (no vinegar) and look into LDN to boost your immune system.
Look here:
Also search this web site for LDN. I posted some info.
Ask me any questions.

Grandmama16 2014-06-02 01:46:48 -0500 Report

I take a probiotic if I can remember with all my other supplements. What is LDN? Kimchi. Youngest son is Korean born and we've never tried it. I love sauerkraut but it doesn't love me, Gerd & gas.

evaziem 2014-06-02 09:05:58 -0500 Report

I never saw any supplement that would have probiotics besides other "things."
Probiotics are separate supplements.

evaziem 2014-06-02 08:43:53 -0500 Report

Naltrexone, in 50 mg doses, was developed in early 1980s to treat opioid and alcohol addictions. Dr. Bernard Bihari discovered that low dose Naltrexone at a maximum of 4.5 mg a day is beneficial for a long list of autoimmune and nervous systems diseases, as well as cancer.

The low dose application is called off-label and the medication must be compounded into 1.5-4.5 mg capsules, OR, a 50 mg tablet (Revia or ReVia) can be dissolved in 50 ml distilled water and a syringe can be used to take the precise amount of Naltrexone. This syringe method is preferred by the LDN community and it is highly economical.

Naltrexone in any dose is very inexpensive, about $20 a month. It also is being given to pets and horses.

My benefits of taking LDN

1. reduction in chest fibro pain by 99%
2. reduction in joints pain by 99.9%
3. reduction in R.A. factor
Rheumatiod Arthritis Factor[range 0-13.9]
2009.06.24 10.5
2012.04.18 11.8
2012.10.18 10.9
2013.05.08 13.8 !!
2014.01.07 less than 10
4. enhancement in T4->T3 conversion (thus less thyroid supplement)
5. deeper sleep
6. well-being feeling is back
7. medical and pharmaceutical freedom!!!!!!

Ask me any questions.

Grandmama16 2014-06-02 21:27:50 -0500 Report

I've heard of this from my sis in law who heard a talk about it at a NFP convention.
How do I get it? I have fibromyalgia.

evaziem 2014-06-03 08:33:19 -0500 Report

You have fibro?
I do too. Which part of your body?
Mine is in my chest and upper back.
I got it after I got scared at Walmart when they activated a test fire alarm that so way tooooo loud.

LDN is an RX. Ask your doc. If he/she will not give it to you, ditch him/her.

Grandmama16 2014-06-03 22:41:29 -0500 Report

I will ask her. Thanks. I wish I could print your answer out but I use an IPAD since lap top crashed. She's been my DR for 25 yrs. I've had Fibro almost that long. Diagnosed with depression 1st and realized I've had it since childhood…breakdown at age 12. I've been on many meds in the last 25 years, and now Cymbalta but it's been reduced recently. Fibro hits me anywhere…back, neck, shoulders, hands, knees, feet. At times I could hardly walk, or a knee would give out, or shoulder so bad I couldn't reach up. I've had vertigo from it but especially fatigue lately. I wonder if taking L-Carnitine is causing dizziness lately. It's so hard to know since fibro can cause strange things or sugar level. Arghh. I was diagnosed with type 2 a couple of years ago and only worked up to 2000 mgs of Metformin within a year. I need to exercise more than change my diet…it's low carb. The only real meal I have is at night. My picture is of me telling at me. M.A.

Grandmama16 2014-06-04 15:23:23 -0500 Report

I like that idea. When I was having babies it was the happiest time in my life…no meds except vitamins. I wonder if pregnancy is related to that kind of endorphins.

haoleboy 2014-05-31 15:16:29 -0500 Report

what? no Kimchi???

evaziem 2014-05-31 15:20:20 -0500 Report

Yes, Kimchi!!! :=)
I bought a jar and it was $16.00!!!!!!
I looked at the ingredients and made it myself.
I have been making sauerkraut and kimchi is the same plus anything else you can think of: carrots, ginger, garlic, you name it…

evaziem 2014-05-31 15:35:36 -0500 Report

When I make it myself, I know what's in it…

I wish I could grow our own food but do not know how—a city girl…

jayabee52 2014-06-04 23:58:16 -0500 Report

Eva, it is not hard to grow veggies. other than planting and watering the veggies do all the work.
My first wife was a city girl and we put in several gardens. If you want technical info about gardening go to the county extension office. They have information on plants and how best to grow them. Bookstores also have loads of books telling how to do it. One book I remember as being particularly valuable was "Square foot gardening" how to get a lot of produce in a relatively small space. Check this list out here ~

haoleboy 2014-05-31 16:05:16 -0500 Report

We grow fruit but sadly I can eat very little of it.
When I lived in Hawaii the Korean family that lived next door made their own kimchi ,,, good stuhh

evaziem 2014-05-31 16:17:51 -0500 Report

Grow veggies.
I wish I could kill little rabbits for food.
Too cute, can't do it.
My friend has goats, good milk!

Just Joyce
Just Joyce 2014-05-30 21:13:46 -0500 Report

Since meters are approved for approved for +/- 20% error I only use it as a guide. Since I have not had a note worthy high in 2 years, I don't worry about that. I have 3 different meters and all of them are either plus or minus a few points which doesn't bother me at all. I don't have to test every day so as long as I am not low or high accuracy is not that important to me.

evaziem 2014-05-30 17:48:34 -0500 Report

I think that this issue is extremely important. I see that you too.
I will read this discussion. Thanks!

GabbyPA 2014-05-30 17:46:23 -0500 Report

There is an activist group that met in Washington last month and has drafted up a "regulation" for the tighter accuracy of our meters. I posted a discussion on it where we could chime in and let the FDA know why we need that accuracy. I do believe the comment time is closed.

Meters are a guide, and while we are striving for more accuracy, the best way I have found is to compare my meter to the one my doctor uses. I take mine with me and test right after he does to see if I am in that percentage that Jigsaw is talking about.

jigsaw 2014-05-30 17:18:45 -0500 Report

Meters are FDA approved for +/- 20% error. So if your actual blood glucose was 200 ( hopefully not ) your meter could read anywhere from 160 to 240, and still be within specifications. I agree, that's not to great, but it is simply a bg tracking tool. That's why it's important to have your A1c checked by a lab regularly. I have 5 different meters, and none of them read bg identically.

There was a post a while back that said the FDA was tightening up the spec requirements for meter manufacturers. I haven't seen it happen yet!

evaziem 2014-05-30 17:28:48 -0500 Report

This +/- 20% is NOT GOOD ENOUGH! This is science.
For 100, the measured range would be 80-120… This is a huge difference!

The 2009 article your are talking about is here:

I do not know if the insulin amount is calculated from this measurement.
Is it? If yes, it can kill! Right or wrong?

I wonder how this is Europe?

haoleboy 2014-05-30 18:06:42 -0500 Report

For me (a type 2) accuracy is secondary. I never go low and seldom go real high so the main use (for me) is to determine the change from before eating until 1 and 2 hours after.

haoleboy 2014-05-30 17:00:20 -0500 Report

For what it's worth …
I check my BGL on my meter just prior to getting my labs done (every 3 months). I then compare them when I get the results.
So far the variance has been 5- 10%,
I use a ReliOn Prime meter.


Just Joyce
Just Joyce 2014-05-30 21:16:38 -0500 Report

Steve for me, accuracy is secondary as well. I am more concerned with the A1C results which is my guideline for managing my diabetes.

haoleboy 2014-05-30 21:26:42 -0500 Report

Exactly Joyce … I really have tried lately not to overly concern myself with what my meter reads … I just keep to my plan. since my last A1c I am not testing regularly … pretty much only if I introduce a new food. I find I do better not knowing my BGL minute by minute … same idea as not weighing yourself every day when you are trying to lose weight. (full disclosure … I actually do weigh myself twice a day).
After my last A1c (5.8) I feel confident my food plan is working and just focus on working the plan every day.

Just Joyce
Just Joyce 2014-05-30 22:18:53 -0500 Report

I agree Steve. My doctor gave me a free day because my diabetes is well controlled. I really don't need to know what my BGL is every day unless like you, I introduce a new food. I know what foods I eat regularly is going to do to me.

evaziem 2014-05-30 17:10:52 -0500 Report

RellOn is from Walmart, correct?
How do you compare your data with A1C?
Give me the procedure, please.

haoleboy 2014-05-30 17:19:22 -0500 Report

yes … from Walmart
When I get my labs they also check glucose level … it's part of the Comprehensive Metabolic Panel, I have that, HbA1c and
Lipid Profile done every 3 months