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Question: Allergy blood test

allergies blood test

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#1 Metronidazole

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Posted 02 May 2014 - 09:46 AM


Hello everyone, I developed some health problems in the start of 2012 after taking a course of metronidazole. Since then i have been on a diet low on carbs (only vegetables, fats, fish and meat). Most of my symptoms were improved a lot with this diet, but this improvement stagnated. Therefor i decided to slowly introduce some more foods into my diet for the purpose of diversity. When i slowly introduced some carbs back into my diet i started getting the same problems again as in 2012. With this information i went to my doctor who has scheduled me for some blood tests. Now my question:

 

  • What i found online is that they check the blood for allergen specific IgE. Does this mean it would be "wise" to eat foods that cause an allergic reaction for me day(s) prior to the test, so that the diagnose me properly? 

 



#2 dankis

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Posted 02 May 2014 - 10:04 AM

I advise you not to take IgE antibody test if you don't have typical allergy symptoms. That will probably be a waste of money. It would be wise for you to test for IgG specific  or both IgG and IgA antibodies . Only about 10 % of people who tested positive for food related immunoglobulins is positive for IgE but over 60% for IgG. For test to be accurate you need to eat suspected food for couple of weeks before test in significant amounts.

Good luck in regaining your health Metronidazole!

 


Edited by dankis, 02 May 2014 - 10:25 AM.

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#3 Metronidazole

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Posted 02 May 2014 - 11:44 AM

I advise you not to take IgE antibody test if you don't have typical allergy symptoms. That will probably be a waste of money. It would be wise for you to test for IgG specific  or both IgG and IgA antibodies . Only about 10 % of people who tested positive for food related immunoglobulins is positive for IgE but over 60% for IgG. For test to be accurate you need to eat suspected food for couple of weeks before test in significant amounts.

Good luck in regaining your health Metronidazole!

 

 

Thank you for your reply dankis! What you are saying is pretty much the feeling i got from my doctor. He told me that it might not show anything, in which case he would refer me to a dietist who will slowly exclude things from my diet... till i have no more symptoms. I don't like that solution, but because of the way the Dutch healthcare system work, there's not much i can do to influence that decision.

 

But to return to my question; You are saying that i would have to eat the foods that cause the problems for several weeks(for the IgE test, not the IgG and IgA), correct? 



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#4 dankis

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Posted 02 May 2014 - 10:56 PM

 

But to return to my question; You are saying that i would have to eat the foods that cause the problems for several weeks(for the IgE test, not the IgG and IgA), correct? 

 

 

Unfortunately no. Unless you have strong allergic reaction (IgE based) you have to eat food you want to test, regardless of immunoglobulin type. IMO knowing your food intolerances is very important if you are aiming for good quality of life. In the case your health care doesn't cover this type of screening I suggest you to order it by yourself or buy home test kit.

 







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