Estradiol Reference Values and Clinical Interpretation

Introduction to Estradiol Reference Values

• The Endocrine Society and Society for Endocrinology recommend that estradiol levels above 54.5 pg/ml in postmenopausal women warrant further diagnostic workup 1

Special Populations and Estradiol Thresholds

• For premenopausal women on ovarian suppression therapy with aromatase inhibitors, estradiol must be suppressed to postmenopausal ranges (<26 pmol/L or <7 pg/mL) to ensure therapeutic efficacy, as per guidelines from the American College of Obstetricians and Gynecologists 1
• For prepubertal girls, laboratory evaluation of FSH and estradiol is recommended only when there is failure to initiate or progress through puberty normally, typically by age 13 years, according to the American Academy of Pediatrics [2] [3]