Table 4.

Testosterone levels stratified by hypogonadal status

Laboratory test (mean ± SEM)	Hypogonadal (TT <300)	Eugonadal (TT ≥300)	p-value
Total testosterone (ng/dl)	245.6 ± 4.12 (n = 836)	439.9 ± 3.52 (n = 1326)	N/A
Bioavailable testosterone (ng/dl)	86.1 ± 2.4 (n = 821)	108.8 ± 1.3 (n = 1317)	<0.001
Free testosterone (pg/ml)	47.9 ± 1.03 (n = 834)	63.9 ± 0.53 (n = 1325)	<0.001
SHBG (nmol/l)	43.7 ± 0.74 (n = 836)	68.3 ± 0.87 (n = 1326)	<0.001

SEM, standard error of the mean; SHBG, sex hormone-binding globulin; TT, total testosterone; N/A, not applicable.