Markers of Gestation

Summary of BHCG levels and fundal height in pregnancy and a link to a gestation calculator.

Markers of Gestation
Photo by Laura Ohlman / Unsplash

BHCG levels

Normal (non-pregnant) < 5 IU/L.
Confirmation of pregnancy > 25 IU/L.

Approximate levels in early pregnancy:
Weeks post LMP  
  4 weeks           3 - 426          IU/L
  5 weeks         19 - 7340        IU/L
  6 weeks     1080 - 56500     IU/L
 10 weeks  54100 - 288000   IU/L

In the normal early pregnancy levels should rise by 65% each 48 hours.

A sharply reduced or falling level may indicate an abnormal pregnancy.

2nd Trimester 5000-40,000

3rd Trimester 3000-30,000

Fundal Height

Gestation Calculator

Gestation Calculator calculator