Yes numbers are consistently low , I went off hrt for over a year did blood tests and my estrogen was pretty much at 27 pmol/L every time all my other levels like FSH , LH , progesterone, SHBG , prolactin , testosterone were all consistent with post menopause levels .
On hrt my levels were very different although I agree with bombshell about not going untreated to test this , for me I wasn’t doing well on hrt and wanted to know truly at what stage I was at .
On hrt my estrogen levels were much higher and varied you can’t truly know if you are post menopause taking hormones as far as I know .