Goofy Question About Finger Stick

Graylin Bee
By Graylin Bee Latest Reply 2010-07-06 13:40:05 -0500
Started 2010-07-06 00:04:11 -0500

Whenever I stick my little finger my reading is higher than if I use any other finger. Is it just me or is there a medical reasonfor this? Haven't asked my Dr. He already thinks I'm goofy.

4 replies

MAYS 2010-07-06 07:07:36 -0500 Report

Here are (2) explanations, (neither of which are mine), If I can come across an explanation from a medical or glucose meter manufacturer's website, I'll post it, maybe someone here will have an answer:



IG says:
February 27, 2010 at 7:40 am
The blood system in the body is a like a complex system of pipes. as this blood Flows through the Pancreas, it picks up Insulin, as it progress through your intestine the glucose (food synthesised) and oxygen through the lungs. as it traverses your body, it takes different paths. No two paths are identical. for example, the blood flowing to your right hand and left hand may have identical sugar at the origin but as it flows in your hands, the utilisation of blood sugar by the cells of each hand will vary due to the difference in metabolism rates.

Similarly, in each hand, the blood through each finger may not be identical. In case of long term diabetics, hypertensive patients the onset of vascular disease will also cause differential blood flow.

Also, while home testing, when you draw samples from different sites, you tend to milk your fingers which sometimes results in inter tissue fluids being mixed in the sample and gives a varying reading.

Hence, samples taken at different sites will not be indentical.


Miz Lamb says:
February 27, 2010 at 7:41 am
If you stood there and pricked each finger in turn and went back again you would get 20 different readings.

Finger Pricking is a snapshot in time. Nothing is static in nature, so why expect your blood to be the same from second to second?

The blood in periferals, like the ends of the fingers and toes is what we are most used to using for testing and the most up to date as far as that goes.

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