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Figure 2 | BMC Endocrine Disorders

Figure 2

From: Twenty-four hours secretion pattern of serum estradiol in healthy prepubertal and pubertal boys as determined by a validated ultra-sensitive extraction RIA

Figure 2

Twenty-four hours secretion pattern of serum estradiol in healthy pubertal boys. Upper panel: Individual 24-hour serum profiles of estradiol in 30 healthy boys. The patterned areas indicate values below the analytical detection limit. Lower panel: Normative data for the 24-hours secretion of serum estradiol. Shaded areas show 5–95 percentiles for each pubertal stage. Data is based on 17 boys in early puberty with testicular volume 3–6 mL (A), 10 boys in mid-puberty with testicular volume 8–12 mL (B), 10 boys in late-1 puberty, with testicular volume 15–25 mL, -1 to +2 years from peak height velocity (PHV), who have not reached final height (C) and 9 boys in late-2 puberty, with testicular volume 15–25 mL, +2 to +3 years from PHV and who have reached final height (D).

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