While evaluating the FSH test results, it should always be kept in mind that the level of this hormone vary depending on your age.
For menstruating women, the normal values for FSH blood test, is 4.7 mlU/ml to 21.5 mlU/ml,
while for post-menopausal women, it is 25.8 mIU/ml to 134.8 mIU/ml.
If the level is higher than 25, then the woman may be in the peri or premenopausal stage, while she is approaching menopause, if the level is around 50. Read more at Buzzle: http://www.buzzle.com/articles/fsh-levels-and-menopause.html