• Use Our Beta hCG Calculator to Understand Your IVF Beta Levels

      IVF beta numbers are relatively easy to interpret, once you understand what they are. The beta (short for "beta hCG") is another name for the pregnancy hormone that is produced by an embryo once it has implanted in the mother. The rising beta numbers are a signal to the mother's body to start making the changes needed to sustain a pregnancy.

      IVF Beta hCG Levels: Calculate Your Doubling Time
      IVFConnections' IVF beta calculator was designed to help you quickly figure out the doubling time of your beta numbers. In other words, we'll help you figure out where you are on the Beta Rollercoaster from Hell.
      Simply answer the two questions and click the "Calculate" button and your result will appear below.
      1. Date of first beta
      First beta value

      (mm/dd/yyyy)

      2. Date of second beta
      Second beta value

      (mm/dd/yyyy)

      Calculated doubling time (half life) is:


      While we are confident that this beta calculator gives an accurate calculation of the doubling time for the numbers you've entered, please know that this calculator is no substitute for your own doctor's medical advice. If you have any questions about your beta hCG or any other concerns, please ask your doctor.



      So what does this mean?

      This IVF beta calculator gives the result in the form of number of days (e.g, 2.43). Typically your doctor will be looking for your beta values to double in value every 2 - 3 days (48-72 hours). With this calculator, ideally you want to see your doubling time read somewhere between 2 and 3. As an example, if your beta is 150 on Monday, you will want to see it somewhere around 300 between 2 to 3 days after your first beta test was done.

      A beta test, also known as beta hCG (human chorionic gonadotropin), is a blood test that confirms pregnancy. A qualitative hCG simply reports whether or not there is hCG present in the bloodstream, while a quantitative hCG reports the level of hormone that is present.

      By taking your IVF beta numbers and comparing them at two points in time, you will be able to see how quickly they have gone up (hopefully) or down (we hope not). Your hcg levels are unique to you - so don't worry whether your numbers are higher or lower than others - just pay attention to whether they are doubling in the right time frame.

      An infertility specialist (usually a reproductive endocrinologist or RE) typically orders two quantitative hCG lab tests, spaced two days apart. Other doctors will run the test three or four times so that they can watch the trend over about a week. Neither way is right or wrong; both ways allow the doctor to see how the value changes over time, giving a better overall picture of how an early pregnancy is progressing.

      When you enter the two IVF beta levels you want to test, we will show you the doubling time (or half-life) of your beta levels between those dates. When a beta rises over time, the value you will see is the doubling time. When a beta declines over time, the value you will see is its half-life.

      You can find a chart of "normal" hCG values on our Beta hCG Values and Facts page. There are wide ranges of "normal" hCG values during the first few months of pregnancy; even if a value is incredibly low or high, this is not a meaningful number unless looked at in conjunction with another beta-hCG test or other diagnostic exam ordered by your doctor.

      I want to know more. I need to know more!


      First, start with these articles.

      Beta hCG Values and Facts
      Question: My Beta After Transferring IVF Embryos is 4. Am I Pregnant?
      After an IVF Embryo Transfer: What You Need to Know
      The IVF Two Week Wait (2WW) Defined
      The IVF Two Week Wait (2WW): If and When to Do a Home Pregnancy Test
      All About Home Pregnancy Tests, Including How to Use Them
      IVF Due Date Calculator

      Next, visit our Beta and other related forums.

      Beta Board
      Two Week Wait Board
      Pregnant After IVF Board
      General IVF Board

      Still have questions? Come ask them in the forums or contact us so that we can point you in the right direction.
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