5 doctors weighed in:

Is a miscarriage imminent if my hCG is not doubling?

5 doctors weighed in
Dr. Nikolaos Zacharias
Obstetrics & Gynecology - Maternal Fetal Medicine
2 doctors agree

In brief: Not necessarily.

As with anything else in nature, there is a physiologic variation regarding the doubling time for beta HCG in the first trimester. The rule of thumb is that it should double every 48 hours if it is a viable intrauterine pregnancy.
Failure to do so suggests blighted ovum/miscarriage, ectopic pregnancy, or even normal early pregnancy. See your gynecologist and get pelvic ultrasound to know for sure!

In brief: Not necessarily.

As with anything else in nature, there is a physiologic variation regarding the doubling time for beta HCG in the first trimester. The rule of thumb is that it should double every 48 hours if it is a viable intrauterine pregnancy.
Failure to do so suggests blighted ovum/miscarriage, ectopic pregnancy, or even normal early pregnancy. See your gynecologist and get pelvic ultrasound to know for sure!
Dr. Nikolaos Zacharias
Dr. Nikolaos Zacharias
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Dr. Angela Savatiel
Obstetrics & Gynecology
1 doctor agrees

In brief: No

Serum HCG levels are expected to rise by 2/3 (not double) every 48 hours or so in the first 8 weeks of pregnancy.
However all doctors have had a patient where the HCG rose , just not by that much and ended up in a normal pregnancy. An HCG level that doesn't rise at all or falls is much more concerning for miscarriage.

In brief: No

Serum HCG levels are expected to rise by 2/3 (not double) every 48 hours or so in the first 8 weeks of pregnancy.
However all doctors have had a patient where the HCG rose , just not by that much and ended up in a normal pregnancy. An HCG level that doesn't rise at all or falls is much more concerning for miscarriage.
Dr. Angela Savatiel
Dr. Angela Savatiel
Thank
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