Follicle Stimulating Hormone (FSH)
- Sample Type
- Standard
- Fasting
- No
- Unit
- mIU/mL
FSH is a gonadotropin synthesized and secreted by the anterior pituitary gland. In females, it stimulates the growth of ovarian follicles and the production of estrogen; in males, it acts on Sertoli cells to support spermatogenesis. Measuring FSH alongside LH is vital for evaluating infertility, menstrual irregularities, pituitary disorders, and determining the onset of menopause or premature ovarian failure.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
FSH levels fluctuate significantly based on the phase of the menstrual cycle (follicular vs. luteal). A single high reading doesn't always confirm menopause or ovarian failure; it must be correlated with clinical symptoms, age, and other hormones like Anti-Müllerian Hormone (AMH) and Estradiol.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Follicle Stimulating Hormone (FSH):
Official Sources
Research & Guidelines
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Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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