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View Full Version : Blood Suger Tests - FALSE?


rostkowb
10-16-2009, 07:23 PM
Hello Everyone.

Something I thought that should be shared among everyone:
Over the last few years, I decided to perform tests to see how "truely" accurate our glucometers are. First, I have been using many of the consumer meters available. Among these meters, I tested them against each other using test methods recommended by the companies and health care professionals in the "real world". Result, the meters are very accurate! But something did come up that drew my immediate attention. During certain "real world" tests, sugar readings were innaccurate. This is the example: During the warm season, I spend time detailing automobiles professionally. I use high quality products such as car shampoos, polishes, waxes and maintenace products applied to $40000+ cars. Incorporating my diabetic schedule in this, I would test my sugars before/after the activity. What came up was that my sugars were showing higher than normal without the obvious symptoms! This lead me to thinking uncertainty with my management at first. But then I said something needs to be done. I then arranged for a test that would span over the warm season.
First, I had the meters tested against blood/lab work. Meters are accurate accordingly. Then I would test prior to the activity. Result, sugars are within expected range. After the activity, I would test. Result, readings are high and actually higher than expected! Next (directly after activity), I would test each meter against themselves (3 to 5 minute span). Result, meters are reading the same and accurately. Then I would test the meters on someone else (healthy non-diabetic) and readings are identical and accurate. If all done shows no fault on the meters, what could be the problem? Next, I followed the meters instructions conservatively and "WASHED" my hands aggressively several times and in a quick manner (3 to 5 minute span). Result, readings were showing a drop of 5 mmol! I was stunned to find that sugars dropped so quickly just by performing required instructions. Due to this, I followed the above procedures numerous times to confirm this over the season. Result, the same! Readings dropped by 5 mmol. This means that not "thoroughly" washing my hands (after product use) readings can be leading me to thinking I'm okay when it is not. I then further questioned that if I am already in a low state, what would happen if I didn't wash thoroughly several times after product use?
Please understand that I am not degrading the meters or car care products themselves. But that we need to look at and follow instructions as required for most accurate results. Also, I do wash my hands accordingly but with the other products, I need to take more caution.
Final, this has now lead me to thinking about other products that I/we use that could potentially lead us to the same situation without us knowing. Household cleaners, lawn maintence, personal hygiene, hair care etc could do the same? I don't know? But it is a possibility? Let me know what you think or what results you have had.

Thanx.

butterflykisses
10-16-2009, 08:16 PM
I've wondered about this myself, particularly about the Avon Cucumber Melon hand wash at my kitchen sink. Not that I think that there is cucumber or melons in it, just wonder if the residue left from not rinsing completely might be enough to skew results. :confused:

rostkowb
10-16-2009, 08:49 PM
Sorry for they delay...just got back from a quick dine out. Yes, I believe it could skew results. Since our hands/skin do absorb everything, it could cause issues not just with blood sugars but also internal control etc. I work with many products. Commercial and residential. Examples, acetone, fuels, batteries, electronic/computer equipment, car care products to name a few. Sometimes a single wash will not be enough. Also, wearing protection from these products would help and protect us from any dangers. But cannot always be done. Wearing gloves while performing high polishes on an expensive car will do more damage than good. Any thoughts from anyone else?

It Ain't Over
10-16-2009, 09:05 PM
There was a test posted on another site where a tester with normal blood sugars of 82 handled various foods and tested without washing her hands. Some very hi levels were reported. The highest was over 200 after handing grapes or grape juice.

genie86333
10-17-2009, 11:27 AM
Yes, anything on your hands can skew the results. I've gotten a "hi" from picking up a piece of fruit from the floor & discarding it...I didn't even eat it so I knew it wasn't from that!

Soap, lotion, even swabbing with an alcohol swab & not making sure your finger is totally dry first, can skew results.

butterflykisses
10-17-2009, 12:23 PM
What I was specifically talking about, with the cucumber melon hand soap, is that there must be some residue left behind if I can smell it on my hands when I'm done. How much is enough to cause a problem? Is that small amount enough?

I remember one time getting in my car and testing. I kind of felt like I might be a little low, but the meter said "HI". I thought it must be a very friendly meter, :D , cause I was sure I couldn't be so high that the meter couldn't read it! I wiped my finger off, tested again and it was 70. Who knows what it was?

networkguy
10-18-2009, 11:16 AM
I didnt realize so many people still used fingers for BS testing. For these and comfort reasons I use my forearms. But Ive had similar experiences when I did use my fingers.

rostkowb
10-18-2009, 11:31 AM
I tried (experimented) with forearms and cannot get a decent test without struggle. It might have to do with the amount of "hair" I have. I was thinking though, if we test using our fingers and forearms, why not our toes? What do you think? Thanx.

Subby
10-18-2009, 11:36 AM
I didnt realize so many people still used fingers for BS testing. For these and comfort reasons I use my forearms. But Ive had similar experiences when I did use my fingers.

Delayed reading from the arms. Some may be happy with it, but too delayed for me, I don't need more factors on top of the variance already in meters. I just use clean fingers.

genie86333
10-19-2009, 08:27 PM
I tried (experimented) with forearms and cannot get a decent test without struggle. It might have to do with the amount of "hair" I have. I was thinking though, if we test using our fingers and forearms, why not our toes? What do you think? Thanx.

I can't get a decent arm test either, and I subscribe to the same thing I do as when I go to get blood drawn - I tell the techs to please draw blood from my hands because I'd rather get 1 slightly more painful stick than 2 or more less painful ones.

I've actually heard of people using toes, but I'd be afraid, with the issues diabetics have with feet issues, to do it.