Table 2. Hormone Levels in the Study Population (N = 382).

Hormone levels in maternal hair at delivery	LOD	% > LOD	P25	Median	P75
∑Cortisol (nmol/g)a			0.009	0.017	0.035
Cortisol (ng/g)	0.06	98	0.73	1.71	4.06
20α-dihydrocortisol (ng/g)	0.07	85	0.23	0.63	1.48
20β-dihydrocortisol (ng/g)	0.01	98	1.85	3.69	6.71
∑Cortisone (nmol/g)a			0.050	0.091	0.156
Cortisone (ng/g)	0.10	95	4.77	12.0	22.5
20α-dihydrocortisone (ng/g)	0.02	99	3.80	8.27	15.7
20β-dihydrocortisone (ng/g)	0.02	97	2.60	5.74	9.82
β-cortolone (ng/g)	0.50	74	<LOD	4.54	7.66
11-dehydrocorticosterone (ng/g)	0.10	88	0.91	1.82	2.98
Testosterone (ng/g)	0.10	89	0.23	0.42	0.65
Progesterone (ng/g)	0.10	100	30.8	76.5	166.6

^aMolar sum of cortisol and cortisone metabolites. Median ∑cortisol and ∑cortisone levels expressed as ng/g were 6.1 and 32.9 ng/g, respectively.