Understanding hCG
Human chorionic gonadotropin (hCG) is the pregnancy hormone produced after implantation. It doubles approximately every 48-72 hours in early pregnancy. Slow doubling or declining levels may indicate miscarriage or ectopic pregnancy. Very high levels may indicate twins or molar pregnancy.
Normal hCG Doubling Times
hCG below 1200: Doubles every 48-72 hours
hCG 1200-6000: Doubles every 72-96 hours
hCG above 6000: Doubling slows, can take over 96 hours
After 8-10 weeks, hCG plateaus and may decline. Ultrasound becomes more useful than hCG levels.
Interpreting Results
One hCG measurement is not very informative. Trends matter more - doubling as expected is reassuring. Slow rise or decline warrants monitoring. However, viable pregnancies can have atypical hCG patterns, and ultrasound is ultimately more reliable for confirming viability.
Quick Tips
- BMI alone doesn't reflect overall health
- TDEE varies based on activity level
- Consult a healthcare professional for medical decisions
Frequently Asked Questions
Varies widely: 4 weeks: 25-400, 5 weeks: 200-7000, 6 weeks: 1000-56000. Trends matter more than single values.
Not necessarily. Range is wide. Slow doubling or decline is more concerning than a single low value.
Very high levels may suggest twins, but ultrasound is needed to confirm.
Once ultrasound confirms heartbeat (6-7 weeks), hCG tracking is less useful.
Some variation is normal. Overall upward trend is more important than exact doubling.