Zinc status in normal Thai infants and children.

Serum zinc levels in Thai infants and children from newborn to 14 years were studied. Data showed that serum zinc levels of infants were significantly lower than that of children (P less than 0.0005) although serum zinc levels in infants were low. They appeared to have normal growth and development. Beyond one year of age serum zinc levels increased with increasing age and there was no reduction in serum zinc level in pubertal subjects. Serum retinol binding protein was also studied. It was found to be low at birth and started to increased in the age of 1--5 months, the relationship between serum zinc and serum RBP was not apparent either in the younger age groups or in adult population.