Positive Skin Test, Normal Blood Results

Posted on: Wed, 01/15/2014 - 3:02am
JTV's picture
JTV
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Joined: 01/15/2014 - 07:44

After an allergic reaction to a peanut flavored snack, my 1 1/2 year old son had a positive skin test but his peanut component blood test returned normal results. Our doctor noted how "weird" this situation is and advised to continue refraining from peanuts until a follow up test in a year. Is there anyone else that has experienced a similar situation? Any advise would be greatly appreciated! G-d bless all those who suffer from life threatening food allergies!!

Posted on: Tue, 01/21/2014 - 4:36am
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Joined: 04/16/2013 - 17:58

My son had the opposite, positive blood test and negative skin test. His allergist was confident that he had outgrown his allergies, so we did an oral challenge. Guess what? He FAILED MISERABLY!!! I agree with the allergist, keep him away until both are negative :)

Posted on: Wed, 01/22/2014 - 6:44am
OneTwinAllergic's picture
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Joined: 01/22/2014 - 13:31

After getting a rash from peanut butter at 18mths, my daughter also had a positive skin test. A year later a blood test was done and it was negative (we were excited to think that she had grown out of this), but a follow-up skin test reacted. We were told that "the blood tests were just not accurate for her." At 5yrs old (another doctor) she reacted to skin tests again (no blood tests done). At 9yrs old (another doctor again) she reacted to skin tests for peanuts and had positive blood work this time, but not tree nuts. This doctor said that the blood tests pretty much tell the level at which you are allergic and would have liked to have seen more consistant blood work results. Being that they were negative at one time, there was a greater chance of outgrowing the allergy, but then the blood work was positive at 9yrs., but her tree nut blood/skin tests are now negative.

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