question about what can affect A1C test

By Darly Latest Reply 2009-12-18 23:38:36 -0600
Started 2009-12-10 09:09:27 -0600

Good morning all my friends!

I was wondering if you had a tendency to bleed more,(like when I stick my finger,blood will usually run down my fingers,sometimes hands,makes a mess sometimes) would this at all affect your A1C level test? I am not sure if this is means you are losing red blood cells…

Thank you…Darlene

10 replies

Crashnot 2009-12-10 12:26:44 -0600 Report

A1C is reading the sugar that has "stuck" to your red cells, so it's there no matter how much blood you have in you.

For all the lancet bleeding, are you pricking your finger on the edge or the middle of the pad? Right in the middle is going to get a lot more blood, so you might try the edge of the finger pad where the skin is thicker and will stop bleeding sooner. Also, if my hands have just been washed and are still a little wet, the blood doesn't make a round drop but spreads out on my skin. So I'm always sure to get them really dry before doing a lance.

kdroberts 2009-12-10 12:51:53 -0600 Report

That's not true. It's the sugar stuck to your red blood cells. It relies on a standard lifecycle of a red blood cell so if you lose blood you are losing a % of red blood cells that are then replaced with new ones that have no sugar bonded to them. If you lose enough blood it will change your A1c enough for the result to be invalid. It's kind of like the water in vodka teenager trick. The original vodka has an alcohol %, if you pour some out and replace it with water you lower the overall alcohol %. There are lots of other things that can raise or lower an A1c as well.

Crashnot 2009-12-10 15:40:32 -0600 Report

Now I never would have thought of that, thank you! I know that your liver stores extra red cells that are called on in time of stress. So I would have assumed they would have the same A1C as the rest. But if they go into storage right after being produced it makes sense that they are cleaner cells. And of course there is always new blood being produced as well. But if you lost a lot of blood in an accident, it's going to take more than a day to replace!

Crashnot 2009-12-10 15:42:53 -0600 Report

Hee hee, I'm not familiar with the vodka and water trick. But when we were trying to get my liter a day dad into treatment, I did spike all his hidden vodka bottles with vinegar. Made him smell like a salad bar. He was livid, but was hard to deny he'd had a few shots and we did get him into detox!

kdroberts 2009-12-10 09:16:00 -0600 Report

It shouldn't but blood loss can affect an A1c, usually something like donating blood not little bleeds here and there. You might want to try changing the setting on your lancing device though since it sounds like it is set too deep.

Sue Turner
Sue Turner 2009-12-10 09:15:59 -0600 Report

I really don't think that that would have anything to do with you A1C level, however, my Dr. told me that that can affect the reading you get when you do you testing. You need to be sure and get the fresh blood out of your finger, if anything gets in it it can change your reading. Anyway, I hope that that helps you. Sue T.

alanbossman 2009-12-10 09:14:33 -0600 Report

Good morning Darly, I dont think that would affect your a1c. Check your depth on you lancet you be to deep on your lancet. If not see doc. there might be a problem.

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