1. What is the Estrogen/Progesterone Ratio?

The Estrogen/Progesterone Ratio (E/P ratio) is a calculation used to assess hormonal balance in women. It compares the levels of estrogen (E) to progesterone (P) in the blood, which is important for understanding menstrual cycle regularity, fertility, and menopausal status.

2. How Does the Calculator Work?

The calculator uses the simple ratio formula:

Where:

• \( E \) — Estrogen level in pg/ml
• \( P \) — Progesterone level in ng/ml

Explanation: The ratio provides insight into the balance between these two important hormones. Higher ratios may indicate estrogen dominance, while lower ratios may suggest progesterone dominance.

3. Importance of Hormone Ratio

Details: The E/P ratio is clinically significant for evaluating menstrual irregularities, infertility, perimenopausal symptoms, and hormonal therapy effectiveness.

4. Using the Calculator

Tips: Enter estrogen level in pg/ml and progesterone level in ng/ml. Both values must be positive numbers. The ratio is unitless.

5. Frequently Asked Questions (FAQ)

Q1: What are typical E/P ratio values?
A: Normal ranges vary by menstrual cycle phase: follicular phase (~10:1), luteal phase (~1:10), with menopause typically showing higher ratios.

Q2: When should hormone levels be tested?
A: Testing timing depends on menstrual cycle phase. Progesterone is best measured 7 days post-ovulation (mid-luteal phase).

Q3: What does a high ratio indicate?
A: High ratios may suggest estrogen dominance, associated with symptoms like heavy periods, PMS, fibroids, or increased breast cancer risk.

Q4: What does a low ratio indicate?
A: Low ratios may indicate progesterone dominance or estrogen deficiency, potentially causing symptoms like short cycles, spotting, or infertility.

Q5: Are there limitations to this ratio?
A: Yes, the ratio should be interpreted in clinical context with symptoms and other tests, as normal ranges vary by age, cycle phase, and lab methods.