Last Updated on December 2, 2020
“Is my hCG level normal?” “How to calculator hCG levels after IVF?” Use our IVF hCG calculator and you’ll know! Our beta hCG calculator covers all IVF treatments, including HCG levels after IVF 3 days transfer, and 5 days transfer.
If a woman is pregnant after IVF, her levels of hCG will rise steadily and dramatically at the beginning of pregnancy. While single tests for hCG aren’t the only factor in pregnancy, an IVF hCG calculator can provide some assurance – or at least help determine if rising or declining levels of hCG are normal or not.
What is the Beta hCG level?
If you find an IVF hCG calculator online, you may notice the word “beta,” as in the “beta hCG level.” Most people do not understand what this means. In simplest terms, the beta hCG test tells you how much hCG is in the blood. On the flip side, there are some hCG tests that just tell you whether or not there is any hCG in the blood. Those are positive/negative tests and while they can be useful to some extent, they’re not incredibly useful for post-IVF treatment patients.
What date do you have the IVF hCG test?
In general, after a transfer is completed, fertility specialists will schedule a pregnancy test for 14 days later. Normally, you do your first pregnancy HCG blood test 14 days after embryo transfer. But you may wonder how to calculate the date because all the hCG level charts go by DPO(days past ovulation) or LMP( last menstrual period). The below form might help give you some closure.
|IVF||DPO date||hCG test date|
|Own eggs, Fresh donor eggs, Fresh donor embryos||consider the egg retrieval date as 0 day of DPO date||14 days later after the egg retrieval date|
|3-day Frozen Embryo Transfer||consider embryo transfer date as 3 days of DPO date||11 days later after the embryo transfer date|
|5-day Frozen Embryo Transfer||consider embryo transfer date as 5 days of DPO date||9 days later after the embryo transfer date|
How does hCG in IVF pregnancy work?
Well, using a blood test, the specialist will test for pregnancy by determining the hCG level. If the blood test shows an hCG level of at least 5mUI/ml, the test is considered positive.
Here’s where things get interesting. A second test is scheduled when the first test is positive. Why? First, it’s because 5 mUI/ml hCG level is not indicative of pregnancy after IVF; it only indicates that there is hCG present in the body. Some women normally have a certain amount of hCG in the body naturally. Second, and the main reason, is that specialists are looking for an increase in hCG, not merely the presence of it.
hCG levels chart in weeks from DPO (days past ovulation):
- 1 week DPO: 5 – 50 mIU/ml
- 2 weeks DPO: 5 – 426 mIU/ml
- 3 weeks DPO: 18 – 7,340 mIU/ml
- 4 weeks DPO: 1,080 – 56,500 mIU/ml
- 5 – 6 weeks DPO: 7, 650 – 229,000 mIU/ml
- 7 – 10 weeks DPO: 25,700 – 288,000 mIU/ml
- 11 – 14 weeks DPO: 13,300 – 254,000 mIU/ml
- 15 – 22 weeks DPO: 4,060 – 165,400 mIU/ml
- 23 – 38 weeks DPO: 3,640 – 117,000 mIU/ml
The above hCG levels are only a guide. Every woman is different and has her own hCG numbers after IVF. Because of that, the test is scheduled for two days later in order to see if hCG levels double, as expected. Therefore, it’s more important to focus on whether or not the hCG level is rising – and how much it’s rising – than the actual value.
Sometimes, women will ask if their hCG level in doubling time is normal. In many early IVF pregnancies, the hCG level will double every 48 to 72 hours. The level of hCG should rise until you are 11 weeks pregnant. Then, it should stabilize, and then eventually decline until the delivery date.
“Normal” doubling time
|5 – 7,340||<21 days||48-72 hours|
|1,080 – 56,500||21-28 days||72-96 hours|
|7, 650 – 288,000||> 28 days||> 96 hours|
However, the important thing to realize is that there is no real “normal” hCG level. As this article explains, it’s the rise in hCG over certain periods of time that’s more indicative of pregnancy than the numbers themselves.
Calculating using an IVF hCG calculator
An online IVF hCG calculator can help you determine if the rate that your hCG level is increasing is normal or not. Some calculators are easier to understand than others are. Here is some information that can help you use them.
- You use information from your in-office hCG tests. Most at-home hCG tests can only measure hCG levels in the urine (as they are not blood tests). Additionally, these tests can only determine IF there is hCG in the urine, not how much. In the US, there are very few at-home tests that will give you beta hCG levels.
- Pay attention to timing and keep your expectations in check. There’s no point in testing too early because you might become disappointed unnecessarily. Remember, a single hCG measurement isn’t enough to detect pregnancy after IVF. You need at least two different tests, and for best results, the tests need to be at least 2 days apart.
- On that note, you need to test twice, at least. You need two separate measurements to use a calculator. The tests need to be at least a day apart but ideally, more than 2 days apart.
How to use an IVF hCG Calculator
An IVF hCG calculator (beta hCG) helps you understand whether your IVF levels are increasing normally. So, in order to use the calculator, you need to take your own hCG levels and also keep track of exactly when the tests were taken.
To use an IVF hCG calculator for post-IVF treatment, you need to know:
- First test: Number of days since the transfer, and the beta hCG level on that day
- Second test: Number of days since the transfer, and the beta hCG level on that day
Step 1: Choose IVF treatment and input embryo transfer date
On the date of transfer, what stage will the embryos be in? Here are the options:
- Own eggs IVF (This option includes ICSI or no)
- Fresh donor egg IVF (This option includes ICSI or no)
- Fresh donor embryo cycle
- 3 Days frozen embryo transfer(This option calculate hCG levels after IVF 3 day transfer)
- 5 Days frozen embryo transfer(This option calculate hCG levels after IVF 5 day transfer)
And then, You can choose the egg retrieval date or embryo transfer date from the dropdown calendar or enter the start date by mm/dd/yyyy.
For example, a woman starts her IVF pregnancy journey with 5 days FET. His embryo transfer date is March 1, 2017 and input 01/03/2017.
After egg retrieval, the specialist will attempt to fertilize the eggs. Some or all of the eggs will be fertilized. As soon as fertilization begins, the embryos begin aging. But you should not have to worry about determining the stage of the embryos at transfer. This hCG calculator can do for you.
Step 2: Enter the first hCG test date and beta hCG level
Typically, a fertility specialist will test your blood for pregnancy 14 days after transfer. However, home kits are available and can test hCG levels as early as 4 to 5 days after implantation.
Enter the date of your first hCG test. So, if you were tested for hCG on March 10, 2017, you would choose or enter 10/03/2017.
Next, enter the results from the beta hCG test into the IVF hCG calculator.
Step 3. Enter the second hCG test date and beta hCG level
Before you can calculate any results, you need to enter the results from a second test that was done. An online IVF hCG calculator is based on the assumption that at least one day has passed. In other words, your results could be skewed if you don’t let some time pass and use the results from two tests that were done on the same day (unlikely if you use results from your specialist).
So you will also choose or enter the second test date.
Finally, you enter the results from the second test.
Step 4: Calculate and examine the results
Notice this step is to “examine,” not judge. Unfortunately, this is where most women who are very inexperienced in understanding hCG levels make their mistakes. An IVF hCG calculator is useful for determining normal rates of increase. It is not a pregnancy test. With that in mind, here’s what you can expect to see:
IVF hCG Calculator Results Chart
|The difference in hCG levels||Tell you the difference in levels from the first and second test, as a percentage (i.e., +525/+700% or -25/-67%)|
|2 Day Increase||Give you a 2-day increase rate, regardless of how many days passed between your tests. (i.e., 700%)|
|Doubling time||Tell you how long it’s taking for your hCG levels to double, based on your information (i.e, 16 hours).|
|Doubling rate||Tell you whether or not the rate at which your hCG levels are doubling is normal or not (i.e., normal, lower than normal, higher than normal).|
Example Results from an IVF hCG Calculator
Keep in mind that the point of an hCG test is to determine if hCG levels are rising at a rate that’s consistent with pregnancy. Most of the time, when a woman is pregnant, her hCG levels double within 2 days of the first hCG test.
With that in mind, here are examples of a normal doubling rate and a lower than normal doubling rate. The examples are using median hCG levels.
Every woman is different, so the beta hCG of IVF given is approximate. The data on this IVF hCG calculator is not intended to be a substitute for professional medical diagnosis or advice.
Scenario A using IVF with 3 Days FET
Date of embryo transfer: Jan 1, 2017
First Test: Jan 14, 2017 hCG level = 126
Second Test: Jan 17, 2017 hCG level = 210
IVF hCG Calculator Results Chart
|The difference in hCG levels||+54 mIU/mL|
|2 Day Increase||113%|
|Doubling time||139.9 hours|
|Doubling rate||Lower than normal|
Scenario B using IVF with 5 Days FET
Date of embryo transfer: Jan 2, 2017
First Test: Jan 12, 2017 hCG level = 627
Second Test: Jan 16, 2017 hCG level = 2672
IVF hCG Calculator Results Chart
|The difference in hCG levels||1345 mIU/mL|
|Doubling time||52.2 hours|
Frequently Asked Questions
What is an IVF hCG Calculator?
- An IVF hCG calculator measures the rate that hCG levels double between two different tests. It tells you if the rate of doubling is normal or not, and it may also indicate the likelihood of twins.
What information do you need to use?
- You need information from both of your hCG blood tests. You have to use exact numbers, so you can’t use basic hCG strips that you buy in a drugstore or pharmacy.
Can you use estimated numbers?
- Yes, you can technically play with the numbers to see what will happen in different scenarios. This may be helpful if you are curious about what’s considered normal (hint: “normal” doubling rate covers a very wide range of increase in hCG level).