1. What Is hCG Calculator?

The hCG Calculator estimates gestational age based on human chorionic gonadotropin levels. hCG is a hormone produced during pregnancy that can help determine approximate gestational age in early pregnancy.

2. How Does The Calculator Work?

The calculator uses established hCG reference ranges:

Where:

• hCG Level — Measured in mIU/mL
• Gestational Age — Estimated based on hCG ranges
• LMP — Last menstrual period date

Explanation: hCG levels typically double every 48-72 hours in early pregnancy, providing a method to estimate gestational age.

3. Importance Of hCG Measurement

Details: hCG measurement is crucial for confirming pregnancy, estimating gestational age, monitoring pregnancy progression, and detecting potential complications.

4. Using The Calculator

Tips: Enter hCG level in mIU/mL, last menstrual period date, and optionally conception date. All values must be valid for accurate estimation.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is hCG for dating pregnancy?
A: hCG provides a general estimate but is less accurate than ultrasound for precise dating, especially as pregnancy progresses.

Q2: What are normal hCG ranges by week?
A: hCG levels vary widely but generally range from 5-50 mIU/mL at 3 weeks to over 100,000 mIU/mL by 10-12 weeks.

Q3: When should hCG be measured?
A: hCG is most useful in early pregnancy (first trimester) for dating and monitoring progression.

Q4: What affects hCG levels?
A: Multiple pregnancies, molar pregnancy, ectopic pregnancy, and certain medications can affect hCG levels.

Q5: Should hCG be used alone for dating?
A: No, hCG should be used in conjunction with ultrasound and clinical assessment for accurate pregnancy dating.