1. What is FSH/LH Ratio?

The FSH/LH ratio is a calculation used in reproductive endocrinology to assess the balance between follicle-stimulating hormone (FSH) and luteinizing hormone (LH) levels in women. This ratio can provide insights into ovarian function and various reproductive health conditions.

2. How Does the Calculator Work?

The calculator uses the simple ratio formula:

Where:

• \( FSH \) — Follicle-stimulating hormone level (IU/L)
• \( LH \) — Luteinizing hormone level (IU/L)

Explanation: The calculator divides the FSH value by the LH value to determine their ratio, which is typically interpreted in the context of menstrual cycle phase and reproductive health assessment.

3. Importance of FSH/LH Ratio

Details: The FSH/LH ratio is clinically significant in evaluating conditions such as polycystic ovary syndrome (PCOS), where an elevated ratio may be observed. It also helps in assessing ovarian reserve and function throughout different stages of a woman's reproductive life.

4. Using the Calculator

Tips: Enter both FSH and LH values in IU/L. Both values must be positive numbers greater than zero. The ratio is typically interpreted in the context of the menstrual cycle phase when the hormones were measured.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal FSH/LH ratio?
A: In normally cycling women, the FSH/LH ratio is typically around 1:1 in the early follicular phase. Ratios greater than 2:1 may suggest PCOS in some cases.

Q2: When should FSH and LH be measured?
A: These hormones are typically measured on day 2-4 of the menstrual cycle for the most accurate assessment of baseline levels.

Q3: Can this ratio predict fertility?
A: While the FSH/LH ratio can provide information about ovarian function, it is just one of many factors considered in fertility assessment and should be interpreted by a healthcare professional.

Q4: Does the ratio change with age?
A: Yes, as women approach menopause, FSH levels typically rise more significantly than LH levels, which can alter the ratio.

Q5: Are there limitations to using this ratio?
A: The ratio should always be interpreted in the context of other clinical findings, as many factors can influence FSH and LH levels including stress, medications, and underlying health conditions.