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Date: | Tue, 8 Oct 2002 16:35:04 -0700 |
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>The changing
>concentration of these immunoglobulins in milk provides an example of
>the interaction between milk components and the functional development
>of the infant: while IgG and IgM rise rapidly after birth, the newborn
>maintains low levels of endogenous IgA during the first year of life.
I think this sentence is confusing because the subject is not clear. Of
course, IgG in the infant FALLS after birth, since there is no longer
any transfer across the placenta, and he is not yet making any
appreciable IgG. "Normal" values for IgG at age 0-14 days are 6.0 -
16.0 g/L; the range is not this high again until the teen years.
However, AFTER age 5 the lower end of the range is, on average, as high
as it was just after parturition (6.0 - 13.0 for ages 6-10 years).
Arly Helm, MS, IBCLC
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