when should my youngest be tested?

Posted on: Sat, 03/20/2004 - 2:07pm
sebastian's picture
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Joined: 05/26/2003 - 09:00

I have a 3 year old DD who is PA/TN allergic as well as allergic to shellfish.

She was allergy tested at 14 months after her first anaphylactic reaction to PB at 12 months.

My youngest just turned 1, and obviously we have not given her anything with PB...we do not even keep may contains in the house.
I also did not eat peanut butter while pg or nursing. ( I did eat a lot of it while pg with my first)

So, when should we have her tested? Don't they need to be exposed to it first before testing +? Is a skin test sufficient or should the blood test be done as well?
Should we wait until she is older?

does anyone know the odds of my second DD having a peanut/TN allergy?

Thanks!
shelley

Posted on: Sat, 03/20/2004 - 10:59pm
esmom's picture
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Joined: 07/25/2001 - 09:00

I had my DD (the sister a pa one) tested at 1 and again at 3 (it was neg. both times) on the second appointment (at 3 he gave her a small amount of PB) but she did not eat much she was afraid, thats all she know's
She did ok, but we do not eat it ( I would give the one that is neg. may contains without her big sister around) and I Do not worry as much about her. I also have it in my mind that chance of another child being pa is 30% but I do not know why I think that???

Posted on: Sun, 03/21/2004 - 12:54am
Gwen 5's picture
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Joined: 01/24/2003 - 09:00

I am wondering the same thing. My younger dd is 3 1/2 and her big sister is 6. She is the on who is severley PA/TN allergic. I also have not had my 3 yr old tested, but did make an appt with the allergist for Aug because I know I need to do it.
I have been told that it is better to doa skin test as the answer is definite vs cap rast which may show positive but they may or may not really be allergic.
I have beec procrastinating- I am afraid to get her tested. I do feed her things that say may contain occasionally and she seems fine. I feel like she is ok but I really want to know for sure.
I was afraid of skin testing cuz I feel like that counts as an exposure.
What to do...

Posted on: Sun, 03/21/2004 - 10:29am
Driving Me Nutty's picture
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Joined: 05/01/2003 - 09:00

I read somewhere recently that the chances that a sibling of a PA child, has only a 7% chance of also being PA. I'll try to find the source...

Posted on: Sun, 03/21/2004 - 12:49pm
ajas_folks's picture
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Joined: 04/28/2000 - 09:00

Our 5 year old is the PA child. (Son.)
We just had our 2 1/2 year-old daughter tested (skin) for PA, some TNA and other foods. All skin tests were negative. She was NOT exposed to peanut while I was pregnant or nursing. That may well have been FIRST peanut exposure for her, so the negative on peanut only gives us a data point & no real answer so far. We will continue to ASSUME she is PA & TNA for now. (Our comfort/safety zone.)
Our home is a strict NO PEANUT NO TREE NUT home, to include no may contains/shared equipment.
The testing for her (2 1/2 year-old) was most unpleasant. She freaked out, hated to be held still, hated the skin pricks, and generally had a major tantrum. Don't know when we will repeat testing -- maybe wait 2 years?
EB

Posted on: Sun, 03/21/2004 - 9:42pm
attlun's picture
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Joined: 06/13/2003 - 09:00

My ds is allergic to pn and 4 preservatives. My dd (14 mo.) has her 1st appt. with the allergist on Friday.
------------------
Tina
Trevor age 2 -PA
Harmony age 1 -KNA
It's a BOY!!! due June 24, 2004

Posted on: Sun, 03/21/2004 - 9:51pm
samirosenjacken's picture
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Joined: 09/30/2002 - 09:00

According to Dr. Wood at Johns Hopkins, siblings shouldn't be tested before age 4. He stated you can get false NEGATIVES before age 4 and actually make your child allergic to the food. He said if your child is negative by age 4, then you can be safe to consider him/her negative.
I have TWO PA girls ages 7 and 5.... their brother will be tested this summer just before his 4th birthday.

Posted on: Sun, 03/21/2004 - 10:44pm
StaceyK's picture
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Joined: 05/06/2003 - 09:00

My allergist wants to test my youngest in a year, when he turns 3.

Posted on: Mon, 03/22/2004 - 3:55am
CorinneM1's picture
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Joined: 06/20/2002 - 09:00

Quote:Originally posted by samirosenjacken:
[b]According to Dr. Wood at Johns Hopkins, siblings shouldn't be tested before age 4. He stated you can get false NEGATIVES before age 4 and actually make your child allergic to the food. He said if your child is negative by age 4, then you can be safe to consider him/her negative.
I have TWO PA girls ages 7 and 5.... their brother will be tested this summer just before his 4th birthday. [/b]
I can see this for skin testing, but why wouldn't you have a blood test done? I would like my daughter (second child--oh btw I had a daughter on 12/12/03 and I am just starting to get back into this board now) tested for food allergies at the same time as her lead screening test (usually done around 1 yr old).

Posted on: Wed, 03/24/2004 - 12:56pm
NutlessMOM's picture
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Joined: 09/17/2003 - 09:00

I have 3 children. Oldest son can eat a whole jar of peanut butter while the youngest 2 can not even touch it. Daughter was tested when she was two and son was tested before he was two. Son is severely allergic. The doctor just did a skin test where they put some of the protein on his skin. Hope this helps. [img]http://uumor.pair.com/nutalle2/peanutallergy/smile.gif[/img]

Posted on: Tue, 03/30/2004 - 12:32am
amy2's picture
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Joined: 09/02/2000 - 09:00

My son was diagnosed when he was 12 months, due to a reaction. My daugter was tested when she was 3 1/2. My allergists have all told me that to not test for allergies too young, due to false positives, and negatives. When my son was tested, we really didn't have a choice, we needed to know what was going on. I have treated my daughter as if she is allergic until I had her tested. She is positive. I, along with her allergist, was very shocked. It just goes to show, not all the percentages are correct! She was skin tested, and tested very positively, and then followed up with a blood test, also positive. I think unless you have a situation that results in needing to know, it is best to wait till they are around 4, and just treat them as if they are until you know. Let's face it, even if some siblings aren't PA, the only place they will get to eat it is outside of the home, if another sibling is PA!! [img]http://uumor.pair.com/nutalle2/peanutallergy/smile.gif[/img]) hope this helps, Amy

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