Well, after so many dumb and useless posts let me try to help you.
"according to Sinha-Hikim et al. (8), who defined the range of total and free testosterone levels during the normal menstrual cycle in healthy women, the
mean testosterone level across the cycle was
1.20 ± 0.69 nmol/L and
the mean free testosterone was 12.8 ± 5.59 pmol/L. These levels were measured using an equilibrium dialysis method, and the sensitivity of the total testosterone assay was increased to 0.008 nmol/L. The results from that study are sound and have been used as references in many other studies. Furthermore, these testosterone levels are in agreement with those reported in other literature (9, 10)."
For the whole article:
http://jcem.endojournals.org/cgi/content/full/86/4/1842