Serial serum immunoglobulin levels in acute postinfectious glomerulonephritis.

In 102 children with acute postinfectious glomerulonephritis, serum immunoglobulin levels at six month follow-up were significantly lower than those on admission to hospital. For those with a normal C 3 level on admission, the admission level of IgG was lower than for the group as a whole, while serum IgA and IgM levels on admission were no different from the group as a whole. Absolute levels of serum immunoglobulin in acute glomerulonephritis will not differentiate one kind of renal lesion from another.