IgG Levels in Mother-Father-Cord Trios

Abstract
Cord plasmas have a higher concentration of Ig[immunoglobulin]G than do the mothers, although autologous, fetal IgG is only a small fraction of the neonate''s complement. Maternal IgG levels are significantly lower than the nonpregnant adult female, a loss of about one third, which cannot be explained completely by maternal immunization of the fetus.