Doubling time calculator for beta hCG in pregnancy

As you probably know, the doubling time of  beta-hCG values  ​​is very important parameter to monitor how your pregnancy develops. Measuring the concentration of  beta hCG  in blood, measured functionality and placental trophoblast.The hCG levels increase as this tissue develops and if no proper development of the placenta, beta hCG levels will not grow or the velocity of growth will be lower than expected. The growth rate ​​of  hCG  is measured with the doubling time, which is the time that the concentration of beta hCG  takes to double in your blood.  

It is believed that the doubling time of hCG beta must be 2 days or 48 hours. However, this is not entirely true. The first days of pregnancy doubling time is usually much lower, between 20 and 30 hours. Then, as the days go by, normal doubling time becomes up to 200 hours. 

How to calculate the beta hCG doubling time ? 



We have developed this calculator  to calculate the doubling time of the beta-hCG:

  • First hCG level
  • Second hCG level
  • Days Between test: days between the two tests
Just enter these 3 details and the calculator will calculate your doubling time in hours.


How to know if the value of your beta hCG doubling time  is normal?


If you have your value duplication and want to know if it is a normal value, you should consult the   betabase.info data base:








Range Beta-hCG (mIU / ml)Median  doubling time (hours)Doubling time
faster (hours)
Doubling time
slower (hours)
Number of women indicating a doubling time for this range of beta-hCG
1 - 215.507.2218.573
2 - 421.117.2265.1314
4 - 824.887.2265.1353
8 - 1627.497.22149.10207
16 - 3231.818.10174.14627
32-6435.708.10665.281608
64-12837.2514.61359.863210
128-25638.2814.61696.184827
256-51239.3412.46245.625507
512 - 102440.4712.46247.765265
1024 - 204842.3112.46413.634255
2048 - 409645.3012.46709.353279
4096 - 819250.0315.64846.622278
8192-1638460.3817.66373.891480
16.384 a 32.76873.3120.904.695,28887
 32768-6553696.4120.901.220,17444
65536-131072135.5120.901.658,40187
131072 a 262144187.6720.901.658,4028
262.144-524.288189.9328.93263.563



In each line, youcan shown minimum, median and maximum values ​​of doubling time for a given range of concentrations of the hormone. For example, if the two beta hCG values ​​you entered in the calculator are 80 mIU / ml and 110 mIU / ml, doubling your time should be around 37.35 hours and not exceed 360 hours. If your doubling time value is below this maximum, everything is ok.


Disclaimer


Important note: the content available on this page is purely formative and does not replace the opinion of a professional. It is recommended that you consult your doctor before making any health determinations. This website is unofficial of any brand or product. All photographs shown belong to their respective owners and are displayed for informational purposes only. Most images are from Wikimedia Commons, a database of royalty-free images.