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Plasma epinephrine levels at newborn and age 1 year in patients with classical congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency. In 11 infants with CAH, plasma epinephrine decreased longitudinally from newborn 84.0 pg/mL (range, 60.0-155.0 pg/mL) to age 1 year: 40.0 pg/mL (range, 40.0-70.0 pg/mL), P = .04.
