My son's IgE results just came back and his number was 465. What does this mean? I would love to know other children's IgE number so I can see where my son falls.
I just googled "normal lgE reults" and I got tons of information. Check it out! Good luck, hope it's good news!
Michelle is that stuff in you head? I need you in my micro exam next week!
And yes, she is right about everything. IgE is allergy
How old is your son? Total IgE is the amount of IgE antibody that is circulating in the blood. Ig is also called and immunoglobulin. There are various types of immunoglobulins in the blood, but IgE is specific for allergy. The total IgE is the TOTAL amount of IgE or immunoglobulin E that is in your blood. It is indicitve of allergic response. Depending on what you are allergic to- the total count would be all of those substances added up. The RAST test is IgE specific, in that it counts the amount of IgE for a particular allergen (peanut & egg for us). What happens in the body is that we have IgE (also called anitbody) that is in our system. When the offending substance (called the antigen) enters the body, the antibody binds with the antigen. (our immune system looks as it as if it were foreign and "attacks"it.) When this happens, Mast cells release histamine and cause an allergic reaction. We all know what that can be like! By measuring a baseline IGE specific for peanut and then measuring it a year or 2 later, you can see if it has risen or decreased. Many tests after many years may help to determine a trend..and I assume can rise if you had an exposure.
When the RAST test is done, there are 2 different ways of scoring. Both methods are used for each individual. The first score is on a scale of 0-100 kU/L. This number is used to determine where you sit with the second score of 0-6. For example, if a you scored 55kU/L for peanuts, that would sit you with a RAST score of 5, which means there is a very high level of allergen specific IgE (RAST). My allergist has said that any score over 10 ( in the scoring from 0-100) places you at anaphylactic risk. Just to add, the RAST doesn't indicate a level of allergic reaction, it just measures the number of IgE antibodies that the body produces. There are false positives and false negatives. You could have a high level of antibodies and not have an allergic response as well as no antibodies and have an allergic response. From my experience allergists don't just rely on one test, because of the risk of false positives and negatives with both the skin tests and the RASTS. Rather, they try to "create a picture" consisting of history of previous reactions, skin test and RAST results combined.
<0.35 KU/L : ALLERGEN LEVEL 0 - ABSENT OR UNDETECTABLE ALLERGEN SPECIFIC IgE
0.35 - 0.69 : ALLERGEN LEVEL 1 - LOW OF ALLERGEN SPECIFIC IgE
0.70 - 3.49 : ALLERGEN LEVEL 2 - MODERATE LEVEL OF ALLERGEN SPECIFIC IgE
3.50 - 17.49 : ALLERGEN LEVEL 3 - HIGH LEVEL OF ALLERGEN SPECIFIC IgE
17.50 - 49.99 : ALLERGEN LEVEL 4 - VERY HIGH LEVEL OF ALLERGEN SPECIFIC IgE
50.0 - 100.00 : ALLERGEN LEVEL 5 - VERY HIGH LEVEL OF ALLERGEN SPECIFIC IgE
> 100.00 : ALLERGEN LEVEL 6 - EXTREMELY HIGH LEVEL OF ALLERGEN SPECIFIC IgE
Off hand I don't remember what my son's or daughter's IgE number is. I'll look for it & add it here. HTH!
Semolina ~ LOL! Lots & Lots of reading my daughter who is now 7 yrs old was diagnosed w/FA's at 7 months old; my 3 yr old son is FA to peanuts.
What are they testing for??? Very important!
