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FSH Levels & Fertility: Understanding Your Hormone Health

Follicle‑stimulating hormone (FSH) plays a major role in helping your body mature eggs each month. But when you’re trying to conceive, FSH becomes more than just a hormone — it’s an important indicator of ovarian reserve and overall reproductive health. If you’ve recently had fertility testing (or you’re considering it), understanding FSH can help you feel more informed and prepared.

What Is FSH?

FSH is a hormone produced by the pituitary gland. Its job is to:

• Stimulate the ovaries to grow follicles (each containing an egg)

• Support estrogen production

• Help regulate your menstrual cycle

FSH is measured with a simple blood test, typically done on day 2–4 of your menstrual cycle.

What Do FSH Levels Mean?

FSH is one marker of ovarian reserve — but not the only one. Here’s how reproductive endocrinologists interpret it:

• Normal/Lower FSH
  Suggests the ovaries are responding well and still have a healthy supply of eggs.

• Elevated FSH
  Can indicate the ovaries need to “work harder” to produce eggs. This may be a sign of diminished ovarian reserve.

• Very High FSH
  Often reflects significantly reduced egg supply or perimenopause/menopause.

It’s important to remember: FSH fluctuates month to month. One elevated FSH level doesn’t necessarily define your fertility.

FSH Isn’t the Whole Story

Because FSH can vary, your doctor will also look at:

• AMH levels

• Antral follicle count (AFC)

• Cycle history

• Your age

• Family history of early menopause

Together, these give a clearer, more accurate picture of your fertility health.

Final Thoughts

Understanding hormone testing can feel overwhelming — but it’s simply a tool to give you clarity and a plan. At RSCNJ, we break it down in a way that makes sense, so you feel supported and empowered every step of the way.

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