Follicle Stimulating Hormone (FSH)

About this test

Follicle Stimulating Hormone is a blood test that measures the level of FSH, a key hormone produced by the pituitary gland that regulates reproductive processes. In women, Follicle Stimulating Hormone plays a vital role in stimulating ovarian follicles (which contain eggs) and controlling the menstrual cycle. In men, Follicle Stimulating Hormone is involved in sperm production. Follicle Stimulating Hormone test is commonly used in fertility evaluations to assess ovarian reserve and function. Elevated Follicle Stimulating Hormone may indicate reduced ovarian reserve or approaching menopause, while low levels may suggest pituitary or hypothalamic dysfunction. Follicle Stimulating Hormone is often interpreted alongside other hormones such as LH and Estradiol to provide a complete picture of reproductive health. The Follicle Stimulating Hormone test is especially important in assisted reproductive techniques like IVF.

Key points:

• Measures FSH hormone from pituitary gland
• Essential for ovarian follicle development
• Helps assess fertility potential
• Used in both male and female evaluation
• Often combined with LH and Estradiol

Why consider this test?

Follicle Stimulating Hormone test is crucial in evaluating fertility and reproductive health. It helps determine ovarian reserve and identify whether the ovaries are functioning normally. In women undergoing fertility treatments, Follicle Stimulating Hormone helps predict response to ovarian stimulation. High levels may indicate diminished ovarian reserve, while low or normal levels may suggest better reproductive potential. Follicle Stimulating Hormone is also useful in diagnosing menstrual irregularities, menopause, and endocrine disorders.

Key reasons:

• Evaluates ovarian reserve
• Assists in infertility diagnosis
• Helps guide IVF treatment
• Detects menopause or ovarian failure
• Identifies hormonal imbalance

Who should get tested?

Follicle Stimulating Hormone is recommended for individuals facing fertility challenges or hormonal issues. Women with irregular periods or difficulty conceiving should consider this test. Men with suspected low sperm count or reproductive issues may also require Follicle Stimulating Hormone testing.

Recommended for:

• Women with infertility
• Irregular menstrual cycles
• IVF candidates
• Suspected menopause
• Men with fertility concerns

More Information

Follicle Stimulating Hormone test is usually performed on day 2–3 of the menstrual cycle for women. No fasting is required, but timing is critical for accurate interpretation. Results of Follicle Stimulating Hormone should be evaluated along with clinical history and other hormone levels.

Additional details:

• Cycle-dependent test
• No fasting required
• Often paired with LH/E2
• Important in IVF planning
• Requires expert interpretation