The cutoff 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
Answer is B. Diagnosis of menopause is from classical symptom of hot flush (50%) confirmed by elevated FSH levels to more than 100 mlU/ml and serum estradiol < 20 pg/ml.