Prospective and Descriptive Study on Serum Androstenedione Concentration in Healthy Children from Birth until 18 Years of Age and Its Associated Factors
(a) Androstenedione concentration in nonextracted sera (NE-A4, grey box) and after organic solvent extraction (E-A4, dotted box) in girls and boys within the first year of postnatal life. The line denotes the median and the whiskers denote the 2.5 and 97.5 percentiles. and versus NE-A4 concentration in age-matched girls and boys, respectively; ∞ versus NE-A4 for ; a versus NE-A4 in GI within each sex group; b versus E-A4 in GI within each sex group. (b) Serum androstenedione concentration in . The line denotes the median and the whiskers denote the 2.5 and 97.5 percentiles. versus 1–5 years old girls; and versus Tanner I within each sex group; # versus girls in Tanner years.