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Maternal (Expert Forum)
low hcg levels
Patient medical question and answer from The Maternal and Child Health Forum. Health topic area and articles about newborn care
low hcg levels
by Pat__0, Nov 19, 1998 12:00AM
I am 7 weeks pregnant (LMP) from a Pergonal cycle with hcg shot on 2/10.
At 4w3d my hcg was 130, rising to 570 at 5w. By 5w4d my hcg level had only
risen to 1,450 but a gestational sac was seen. Now at 6w4d, hcg level is
only 4,400. However, a heartbeat was seen and the CRL of the fetus (or
whatever it is at this stage) measured 2.9 which correlated to 5w6d.
My physician is concerned but encouraged by the fetal development.
What are the realistic chances this pregnancy is viable? Is a chromosome
abnormality the only explanation for low hcg levels and a slow doubling
rate? I am 38.
Thank you for your assistance.
What
Doctor's Answer
by hfhsmdrcs, Nov 19, 1998 12:00AM
_
Dear Laura:
The pregnancy by definition is viable: there is a fetal heartbeat. The outlook for a continuing pregnancy when the heartbeat has been identified is 90-92%.
hCG doubles approximately every 2 days: there is a range of increase between 1.66 and 2.33. Laboratory values are set to include 95% of the population: thus, there is a 1/20 chance that a laboratory value that falls outside the "normal range" is meaningless.
Keywords: low hCG, ultrasound shows heartbeat
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