Normal Values of Follicle-Stimulating Hormone (FSH)
May 11, 2022
Source: Cainiu Health
Dr. Pan Yongyuan
Introduction
Also known as follicle-stimulating hormone (FSH), the normal FSH level ranges from 5 to 40 mIU/mL. FSH levels are not constant and can be influenced by numerous factors. In women, FSH levels vary across different phases of the menstrual cycle. To ensure accurate FSH test results, blood sampling is recommended between days 2 and 5 of the menstrual cycle.
Follicle-stimulating hormone (FSH) is a glycoprotein hormone secreted by gonadotroph cells in the anterior pituitary gland. In women of childbearing age, FSH levels fluctuate cyclically throughout the menstrual cycle. Many individuals are unclear about the normal reference range for FSH. So, what constitutes a normal FSH level?
Normal FSH Levels
Commonly abbreviated as FSH, follicle-stimulating hormone normally ranges between 5–40 mIU/mL. However, FSH levels are not static; they are influenced by numerous factors and vary across different phases of the menstrual cycle—namely the follicular phase, ovulatory phase, and luteal phase. To ensure accurate FSH test results, blood sampling is ideally performed on days 2–5 of the menstrual cycle.
It is recommended to undergo pelvic ultrasound and luteinizing hormone (LH) testing at a hospital. Based on these findings, ovarian function can be comprehensively assessed. Under physician guidance, appropriate medication may be prescribed to regulate hormonal balance and lower elevated FSH levels. After three months of treatment, hormonal re-evaluation and overall physiological adjustment can help optimize fertility potential. Persistently abnormal FSH levels may significantly impair female fertility.
Fasting is required prior to blood draw to avoid inaccurate results. Additionally, emotional stability before testing is advisable, as FSH levels may be affected by stress or mood fluctuations. We hope this information is helpful! Wishing you good health and happiness!
