An oestradiol reference table helps you quickly put your blood test results in context. Oestradiol (E2) levels vary significantly depending on your cycle phase and age.
Reference values by cycle phase
Early follicular phase (day 1-5): 45-180 pmol/L. Late follicular (day 6-13): 150-850 pmol/L. Ovulatory peak (around day 14): 400-1500 pmol/L. Luteal phase (day 15-28): 80-800 pmol/L. Conversion: 1 pg/mL = 3.67 pmol/L.
Values by life stage
Prepubertal: below 55 pmol/L. Reproductive age: see cycle phases. Perimenopause: highly variable. Post-menopause: typically below 100 pmol/L.
How to read your results
Consider your cycle day, age, the specific lab reference range and any medications. A value clearly outside the expected range for your situation warrants discussion with a healthcare provider.
Frequently asked questions
Do I need to fast for an oestradiol test?
No, fasting is not required. Morning blood draw on day 2-5 of your cycle is recommended for baseline values.
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