Age			Reference Interval
Sex	Low	High	Component	Low	High	Units	Note
F	0 M	10 YRS		<	20	Picomole/Litre
M	0 M	10 YRS		<	20	Picomole/Litre
M	11	17 YRS
F	11	17 YRS
F	18	29 YRS		<	36	Picomole/Litre
F	>=	30 YRS		<	29	Picomole/Litre
M	18	49 YRS		160	699	Picomole/Litre
M	>=	50 YRS		155	558	Picomole/Litre

	Age
Sex	Low	High	Component
F	0 M	10 YRS
M	0 M	10 YRS
M	11	17 YRS
F	11	17 YRS
F	18	29 YRS
F	>=	30 YRS
M	18	49 YRS
M	>=	50 YRS

Reference Interval
Low	High	Units	Note
<	20	Picomole/Litre
<	20	Picomole/Litre
<	36	Picomole/Litre
<	29	Picomole/Litre
160	699	Picomole/Litre
155	558	Picomole/Litre

1(1)

Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].

2(2)

Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].

3(3)

0 - 10 yrs < 20 pmol/L
18 - 49 yrs 160 - 699 pmol/L
During puberty, free testosterone increases
from child to adult concentrations
depending on the Tanner stage.
Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].

4(4)

0 - 10 yrs <20 pmol/L
18 - 29 yrs <36 pmol/L
During puberty, free testosterone increases
from child to adult concentrations
depending on the Tanner stage.
Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].
Free testosterone results may be underestimated
in pregnant patients due to interference by steroids
(e.g. excess estradiol) binding to
sex hormone-binding globulin.

5(5)

Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].
Free testosterone results may be underestimated
in pregnant patients due to interference by steroids
(e.g. excess estradiol) binding to
sex hormone-binding globulin.

6(6)

Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].
Free testosterone results may be underestimated
in pregnant patients due to interference by steroids
(e.g. excess estradiol) binding to
sex hormone-binding globulin.

7(7)

Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].

8(8)

Free testosterone is estimated from
measured total testosterone and
sex hormone-binding globulin using
Vermeulen's algorithm
[J Clin Endocrinol Metab 84 (10):3666-3672, 1999].