Serum Copper in Children (6–12 Years Old): An Age-correction Factor

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Abstract
Serum copper levels in 681 school children 6 to 12 years of age have shown a significant relationship to age and race for which regression values and formulae for correction to adult normal values of 101 ± 32 μg. per 100 ml. (± 2 S.D.) are given, and a nomogram for this operation provided. No sex difference was noted. A significant racial difference was noted, the level for Negroes being higher than that for Caucasians and Mexican- Americans, whereas the levels for the last 2 did not differ significantly from each other. Regression values for the mean (in μg. per 100 ml.) were 159.0 – 2.96 × age for Caucasians and Mexican-Americans and 183.6 – 3.99 × age for Negroes, and the corrections have been considered on the basis of these two groupings, allowing use of a single adult normal mean and range for evaluation of serum copper levels in children.

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