Checking blood sugar

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momtothree
Regular Member


Date Joined Aug 2006
Total Posts : 293
   Posted 3/7/2008 7:22 AM (GMT -7)   
I saw my doctor for a yearly check and she ran a series of blood counts.  My fasting sugar was 107.  She told me to buy a meter, lose weight, and exercise.  It seems that when I draw the blood from my finger, if I get just enough for the meter, the results are quite a bit higher than if I squeeze and make the blood bubble larger and then place on the strip.  What is going on, what am I doing wrong?  I am new to all of this and it is daunting.  Thanks.

LanieG
Forum Moderator


Date Joined Nov 2006
Total Posts : 5408
   Posted 3/7/2008 9:43 AM (GMT -7)   
Hi and welcome to the forum. I'm not sure if this is why there's a difference but you might not be getting enough blood on the smaller amount of blood to have an accurate reading. Maybe others will respond with other ideas. Stay tuned! :)
Lanie
forum moderator - diabetes
diabetes controlled so far by low/no carb diet and exercise; no meds


noplainjane
New Member


Date Joined May 2007
Total Posts : 5
   Posted 3/9/2008 8:57 AM (GMT -7)   
Hi there........the same thing happens to me............if I do not get a good bubble of blood I get a higher reading then when the bubble is plentiful.........do not have any idea why this happens but it does so do not worry and just keep trying.......

tutorgirl
Regular Member


Date Joined Aug 2007
Total Posts : 235
   Posted 3/9/2008 9:42 AM (GMT -7)   
I, too, have noticed that same phenomenon on occasion. And I have no explanation as to why. Guess that's why they do the A1c test, also.
===================
>Karen<
~Forum Moderator/Diabetes~


Jeannie143
Veteran Member


Date Joined Apr 2004
Total Posts : 6056
   Posted 3/10/2008 11:27 AM (GMT -7)   
I believe that most of the meters work by sending a beam of light against the blooded surface of the strip. If there isn't enough blood there is more reflection, hence the incorrect numbers. If you're having trouble getting a good drop of blood try this. Save the rubber bands from your broccoli and put one in your test kit. Just before your next poke, double or triple the rubber band up about 1/2 inch from the poke area on your finger, making a mini-tourniquet. This usually will give you a great drop of blood. Works for me!
~ Jeannie, Forum Moderator/Diabetes & Fibromyalgia
I know God will not give me anything I can't handle. I just wish that He didn't trust me so much. ~Mother Teresa

"People are like stained glass windows: They sparkle and shine when the sun's out, but when the darkness sets in, their true beauty is revealed only if there is light within."- Elizabeth Kubler-Ross


metres
Regular Member


Date Joined Jan 2007
Total Posts : 32
   Posted 3/10/2008 8:30 PM (GMT -7)   
Reflected light? Wasn't that the technology from the first generation of meters, in the 1970's? All of the meters I've ever used are electro-chemical.
 
At least one meter manufacturer recommends wiping off the first drop of blood and testing on a second drop from the same hole. I don't know why. It might help.

gelchick
Regular Member


Date Joined Aug 2006
Total Posts : 477
   Posted 3/11/2008 7:31 AM (GMT -7)   
My doctor taught me to use the second drop of blood, and when they check my blood in the office, that's what they do also. I think it's because they always swab my finger with alcohol- I don't do that at home, but I do always test the second or third drop. I always make sure it's a nice fat drop also-
sandy
I just want to live happily ever after-every now and then. Jimmy Buffett


metres
Regular Member


Date Joined Jan 2007
Total Posts : 32
   Posted 3/11/2008 10:33 AM (GMT -7)   
Good point. I always try to use a generous blood drop too. With some brands a small drop can get sucked into the strip, not quite fill it all the way, but still not generate the 'underfilled strip' error. The meter processes the strip and gives bogus test results.

A good example of why test engineers say, "Bad data is worse than no data at all."

Jeannie143
Veteran Member


Date Joined Apr 2004
Total Posts : 6056
   Posted 3/11/2008 10:47 AM (GMT -7)   
Metres,
You are probably correct... I just know that one of my meters did use light technology and I've only been testing since '03 or so. What the heck do I know? tongue
~ Jeannie, Forum Moderator/Diabetes & Fibromyalgia
I know God will not give me anything I can't handle. I just wish that He didn't trust me so much. ~Mother Teresa

"People are like stained glass windows: They sparkle and shine when the sun's out, but when the darkness sets in, their true beauty is revealed only if there is light within."- Elizabeth Kubler-Ross


LanieG
Forum Moderator


Date Joined Nov 2006
Total Posts : 5408
   Posted 3/14/2008 9:11 AM (GMT -7)   
I'm really happy to see this thread because I discovered that my initial readings were higher than expected with the first "bead" of blood, especially on my older meter.  It's only 2 years old but I have 2 newer ones that read in only 5 seconds whereas the older in does it in 15.  Anyway, now when I use the second bead of blood the bg readings on all three of my meters are within 10 points of one another, much better than when I only used the first drop of blood.  Thanks for the heads up.  :)

Lanie
forum moderator - diabetes
diabetes controlled so far by low/no carb diet and exercise; no meds


Texas Stranger
Regular Member


Date Joined Feb 2008
Total Posts : 26
   Posted 3/16/2008 7:21 AM (GMT -7)   
Lanie, what meter do you have a favorite meter. I currently use a one touch ultra.

LanieG
Forum Moderator


Date Joined Nov 2006
Total Posts : 5408
   Posted 3/16/2008 8:08 AM (GMT -7)   
All three of mine are Bayer Contour.  Bayer was giving them free from their website, so I got one of the newer ones that way.  Of course, then you have to buy their tests strips thereafter when you use up the ones that come with the meter.  Naturally! 

Lanie
forum moderator - diabetes
diabetes controlled so far by low/no carb diet and exercise; no meds


Texas Stranger
Regular Member


Date Joined Feb 2008
Total Posts : 26
   Posted 3/16/2008 8:50 AM (GMT -7)   
Thanks for insurance. I may try one of those
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