Home
Back
hCG Expected Formula:
| From: | To: |
The hCG Expected calculation estimates human chorionic gonadotropin levels based on days post embryo transfer in IVF treatments. It helps monitor early pregnancy progression and approximates pregnancy weeks in IVF cycles.
The calculator uses the hCG Expected formula:
Where:
Explanation: The formula models the typical doubling pattern of hCG levels in early pregnancy, with adjustments for IVF timing calculations.
Details: hCG monitoring is crucial in IVF pregnancies to confirm implantation, monitor early pregnancy progression, detect potential issues, and estimate gestational age accurately.
Tips: Enter the number of days since embryo transfer. The calculator will provide expected hCG levels and approximate pregnancy weeks based on standard IVF dating conventions.
Q1: What is a normal hCG range in early IVF pregnancy?
A: hCG levels vary widely, but typically double every 48-72 hours in viable pregnancies. Values above 25 mIU/mL at 14 days post-transfer are generally considered positive.
Q2: How are IVF pregnancy weeks calculated?
A: IVF pregnancy dating adds 14 days to the embryo age (days post transfer + 14) then divides by 7 to get weeks, accounting for the pre-transfer development period.
Q3: When should first hCG testing occur after IVF?
A: Typically 9-14 days after embryo transfer, depending on clinic protocol and embryo stage (day 3 vs day 5 transfer).
Q4: What if my hCG levels don't match the calculation?
A: Individual variations are common. Consult your reproductive endocrinologist for personalized interpretation and follow-up testing.
Q5: Can this calculator predict pregnancy outcome?
A: No, this provides estimated values only. Actual pregnancy viability requires serial hCG monitoring and ultrasound confirmation by medical professionals.