If my baby tested positive for peanut allergies, is it possible he'll outgrow it over time and it will lessen?

Not that likely: It is possible, as for most allegies, that yes, they will outgrow it. However peanut allergy is one of the more recalcitrant, and can take several years to get any real tolerance. Unlike milk allergy, a significant number of peanut allergy sufferers continue to be allergic their whole lives.

Unlikely: It is very unlikely for anyone o grow out of their peanut allergies. If the immunecap test for peanut showed a high level, like level 4, 5 or 6, it is very unlikely to grow out of their allergies.

About 20%: The percentage of folks who outgrow peanut allergy is about 20%. This should only be tested by a qualified physician under very controlled environment. Desensitization trials are promising even though sample size is not large enough.

It depends: Studies show that 20-30% of kids may outgrow peanut allergy. Generally, the lower peanut antibody levels is a better prognostic factor of tolerance. Lack of other allergies/asthma further increase the probability of tolerance. Lastly, there are studies underway to cure or decrease the severity of peanut allergy: oral immunotherapy to peanut, food allergy herbal formula from mount sinai hospital.

Yes and yes but: More importantly a positive test doesn't necessarily mean he is allergic to peanuts. An allergist must interpret the test in conjunction with his symptoms and history. If he is allergic , then over time some children " outgrow" it. But there are many factors to consider and no good predictive test yet. A lot of research is being done. See jaffe food allergy institute.

Unlikely: Based on a few studies, only 25-30% of children outgrow peanut allergy by the age of 10.