Hello Perinowpost,
Depending on the method used to assay oestradiol levels in blood, the reference range may vary.
It's important to always ask the reference range along with the results.
Here's an example https://www.gloshospitals.nhs.uk/our-services/services-we-offer/pathology/tests-and-investigations/oestradiol/
If your test followed this assay method, you are considered postmenopausal.
Conolly X
Whatever method is used as I said before menopausal status cannot be determined from blood tests of either FSH or estradiol and the reference ranges usually only distinguish two states for adult women : the normal menstrual cycle with its various phases, and post-menopause. Peri-menopause is not considered and it is well known (not by all GPs!) that values for FSH and estradiol particuarly - can go into the post-menopausal range during peri-menopause. This means some GPs wrongly tell women they are post-menopausal from a single blood test leading to much confusion - as has been reported several times on here.
The link you gave Connolly confirms this:
"Serum oestradiol levels are not useful for:
monitoring oral oestrogen replacement (non-oestradiol HRT preparations contain high concentrations of oestrogens which the assay does not detect; oral conjugated equine oestrogens are altered on first pass through the liver to an undetectable form)
assessing the menopausal state, as variable amounts of oestrogen are secreted in the perimenopausal period (i.e. one year before the menopause) and fertile cycles may follow even with very low oestradiol levels."
Also the ref range given is nonsense! A level of 505 wouild be very high in post-menopause and also sinece it is in the middle of the other ranges (for the different parts of the menstural cycle) then is meaningless. I think this is an error unless it is including women on HRT.
Perinowpost - I am very puzzled by the response of your consultant - that estradiol level does not suggest post-menopausal and in any case if you are taking oestrogen measurement of estradiol levels cannot usually help in this context! As you are 54 and if you had been peri-menopausal for some years before starting HRT then you could well be post-menopausal by now - according to this site ( I think) 80 % of women have reached menopause by age 54.
What is important for you is that your oestrogen dose is sufficient for you to feel well!
Hurdity x