Gynaecology & Obstetrics The cut-off point of serum estrogen level for the diagnosis of ovarian failure: A 10 pg/mL B 20 pg/mL C 30 pg/mL D 40 pg/mL 💡 Explanation The cut-off point of serum estrogen level for the diagnosis of ovarian failure: ✓ Correct Answer: B. 20 pg/mL