There are no official guidelines for target estradiol levels in women past the age of natural menopause, however a level of 250pmol/L is cited in NHS literature as the minimal threshold for bone protection. The late Professor Studd, whose work I am more inclined to trust, cited 300pmol/L for this.
Anecdotally, both professor Studd and Louise Newson have found in their clinical experience levels of 400-600pmol/L and occasionally higher can be required to treat mood issues.
I don't know your age but those with premature menopause including surgical as in your case, are strongly advised to maintain physiological estradiol levels at least until the average age of natural menopause. This could be approximately between 250 - 550pmol/L.
I personally know that I feel well around 400pmol/L, so I plan to maintain in this range, however we are all different in what we require to thrive.
Have you ever had a blood level done when you felt at your best? This can be a helpful guide.
