Table 2.

Distribution of reproductive hormones in serum (N = 425).

Hormone	Geometric Mean	Selected Percentiles
		5th	10th	25th	50th	75th	90th	95th
FSH (IU/L)	8.03	3.67	4.33	5.67	7.51	10.5	15.7	22.7
LH (IU/L)	10.1	4.90	5.76	7.34	9.90	13.6	17.2	20.4
Inhibin B (pg/mL)	166a	61.6	81.6	118	160	198	262	283
Testosterone (ng/dL)	420a	223	254	324	408	492	609	665
T:LH ratio	39.4	17.0	22.0	30.5	40.9	54.5	70.0	78.8
SHBG (nmol/mL)	25.8	12.5	15.3	10.1	26.0	33.7	44.0	49.3
Free Androgen Index	0.53	0.32	0.35	0.43	0.52	0.67	0.84	0.95
Estradiol (pg/mL)	29.2a	<10	<10	23.0	30.0	36.0	45.0	49.0
Prolactin (ng/mL)	11.6	5.67	6.53	8.30	11.5	15.8	21.4	25.6

^aArithmetic mean