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What To Eat Before Blood Test

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Posted 17 July 2005 - 11:07 AM

I was just wondering what I should do with Ella before she's tested so that we get the most accurate results. Should this be done after fasting (first thing in the morning) or after eating gluten during the day?

I kind of want them to test her glucose levels again and I know they want her to fast for that so I suppose they would draw all the blood at the same time.

What do you all think? I'm nervous about getting an accurate reading as it is because she's still young (2 1/2 years) so I want to do this right to get the most accurate result.

Any advice would be helpful! We go tomorrow to the ped to talk about testing....

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Posted 17 July 2005 - 11:41 AM

Hi Shannon,
I don't think an overnight fast would effect the celiac panel. As long as she is not on a gluten-free diet your results should be accurate.

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Diagnosed April 2005 via bloodwork and endoscopy

4 year old daughter diagnosed March 2006 via bloodwork and endoscopy
She was completely asymptomatic

4 year old also diagnosed with Graves disease Sept 2006

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Posted 17 July 2005 - 12:17 PM

I had my blood test after consuming a meal FULL of gluten... (but then again I didn't know I was going to be tested for Celiac when I went to the GI appt.) so, no fasting...
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Posted 17 July 2005 - 01:01 PM

An overnight fast will not affect the results. You have to be off of gluten much longer then that.
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Posted 17 July 2005 - 06:46 PM

If you are getting other tests done (lile glucose levels) than she may be required to fast. Fasting for 12 hours should not affect the results. I was sent to the GI doctor not knowing what would happen and he drew blood for celiac that day. My results were very positive for celiac and I don't believe that I had very much gluten if at all within 12 hours prior to the test.
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Carrie Faith

Diagnosed with Celiac Disease in March 2004
Postitive tTg Blood Test, December 2003
Positive Biopsy, March 3, 2004



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Posted 20 July 2010 - 09:13 AM

How much gluten were people consuming in the days/ weeks/ months prior to being tested though?
Would eating crackers on a regular basis, and bread intermittently be enough to show a positive result?
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Posted 20 July 2010 - 09:52 AM

The equivalent of 3-4 slices of bread a day for 3 months to feel fairly confident that you've got low odds of a false negative. There's no exact answer that works for everyone, as it depends on how quickly your intestines are damaged (and how much repair work is going on at the same time).
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Tiffany aka "Have I Mentioned Chocolate Lately?"
Inconclusive Blood Tests, Positive Dietary Results, No Endoscopy
G.F. - September 2003; C.F. - July 2004
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Bellevue, WA

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