HCG & Progesterone Levels Calculator | HCG Levels Doubling Time Calculator |
HCG Doubling Time |
after conception by a urine test. In the diagnosis of early pregnancy failure, the HCG doubling time is a superior diagnostic parameter compared to the HCG ratio, with similar sensitivity but better specificity.HCG levels rise during the first 6 - 10 weeks of pregnancy then decline slowly during the second and third trimesters.At an hCG level below 1,200 mIU/ml, the hCG usually doubles every 48-72 hours. Between 1,200 and 6,000 mIU/ml serum, the hCG usually takes 72-96 hours to double. Above 6,000 mIU/ml, the hCG often takes over four days to double.A great way to understand just how rapidly these levels increase is to look at weeks 4 and 5 during pregnancy. If hCG levels are taken and they not only double, but triple, quadruple or more, this is often a sign that there is more than one baby in the uterus. Eventually, the amount of hCG will reach a plateau where it will stay for the duration of the pregnancy. |