1. What is Progesterone?

Progesterone is a crucial hormone involved in the menstrual cycle, pregnancy, and embryogenesis. It's primarily produced in the ovaries, placenta, and adrenal glands. Monitoring progesterone levels is essential for fertility tracking, pregnancy monitoring, and hormonal balance assessment.

2. How Does the Conversion Work?

The calculator uses the conversion formula:

Where:

• \( nmol/L \) — Progesterone concentration in nanomoles per liter
• \( ng/mL \) — Progesterone concentration in nanograms per milliliter
• \( 0.314 \) — Conversion factor (nmol/L to ng/mL)

Explanation: The conversion factor 0.314 is derived from the molecular weight of progesterone (314.46 g/mol) and the unit conversion between nanomoles and nanograms.

3. Importance of Unit Conversion

Details: Different laboratories and countries use different units for reporting progesterone levels. Accurate conversion between nmol/L and ng/mL is crucial for proper interpretation of test results, treatment decisions, and international collaboration in medical research.

4. Using the Calculator

Tips: Enter progesterone value in nmol/L. The value must be a positive number. The calculator will automatically convert it to ng/mL using the standard conversion factor of 0.314.

5. Frequently Asked Questions (FAQ)

Q1: Why are there different units for progesterone measurement?
A: Different countries and laboratories have adopted different measurement systems. nmol/L is commonly used in Europe and many international settings, while ng/mL is more common in the United States.

Q2: Is the conversion factor the same for all hormones?
A: No, each hormone has a unique conversion factor based on its molecular weight. The factor 0.314 is specific to progesterone.

Q3: What are normal progesterone levels?
A: Normal levels vary throughout the menstrual cycle and during pregnancy. Typical follicular phase levels are 0.1-0.7 ng/mL, while luteal phase levels range from 2-25 ng/mL.

Q4: When should progesterone be measured?
A: Timing depends on the purpose - typically around day 21 of a 28-day cycle for ovulation confirmation, or throughout pregnancy for monitoring.

Q5: Are there any limitations to this conversion?
A: The conversion is mathematically precise, but clinical interpretation should always consider the specific laboratory reference ranges and individual patient circumstances.