Investigation of amenorrhoea. Investigation of
gynaecomastia in men. Monitoring of patients with HRT (oestradiol)
implants. There is little value in measuring oestradiol
for monitoring of oral HRT or patches other than testing
for non-compliance or non-absorption.
Oestradiol levels are of no
value in investigation of menopause since levels may
remain normal for several months following menopause
(please refer to protocol on
investigation of menopause).