How Long After Implantation Does hCG Rise? Role Of hCG

The hCG levels play a major role in determining whether you are pregnant. So, are you thinking if you can know whether you are pregnant by testing the hCG levels in your body? The answer is “yes”. 

You might have a lot of questions regarding this as this is not something that we commonly hear in daily conversations. In this article, let us read about the role of hCG in your pregnancy, and how long after the implantation does hCG rise in your body. So, do not stop reading until you finish this. 

How Long After Implantation Does hCG Rise?

hCG is a hormone produced by the body that will rise when the implantation happens. It is a preparation that the body starts to help the uterine wall to support the growth of the fetus, which will shortly begin. The hCG levels will rise around 11 – 14 days from the day of implantation. That means, after 11 – 14 days after the implantation, you will be able to know whether you are pregnant or not by checking the levels of hCG in the body. 

One in every three females will face implantation bleeding. This will be experienced near the next menstrual period that the female has. Unlike the usual menstruation, implantation bleeding will be a slight spotting or mild bleeding.  After four to five days after this implantation bleeding, the levels of hCG in the body will start to rise. Therefore, if you find out that the level of hCG is high by a home pregnancy test, then you should wait about 2 weeks, and then conduct another test by visiting a clinic or a hospital.

Home Pregnancy Test

If you are pregnant, by this time – 2 weeks – the levels of hCG will have further increased and it can be detected in both urine and blood as well. During the initial 8 weeks of pregnancy, the levels of hCG will keep on rising. 

When the implantation is successful the body will recognize that and will start to do all the other functions that are needed to support the fetus. The body needs to start synthesizing other hormones and preparing the uterine wall so that it needs the strength to carry and support the fetus during the entire gestation period. 

What Is The Role Of hCG? 

hCG, expanded as the human chorionic gonadotropin is a hormone that is present in the female body. When the embryo gets implanted in the body, the body will start to produce more hCG. 

The presence of hCG can be determined by tests conducted in urine or blood samples. When you take home pregnancy tests pregnancy is shown by testing the level of the hCG in urine. 

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How To Know Whether hCG Is Increasing Without A Test?

It is always advised to go through a test before you confirm anything. However, there are a few physical signs that might indicate that your hormonal levels are growing. They are as follows:

  • Fatigue

You will be feeling tired and fatigued. This is a symptom that almost everyone feels. It’s because when the levels of hCG are increasing because you are carrying it, it will initiate the abundant production of another hormone called progesterone, also many other hormones. This lets the body signal you to slow down a bit to adjust to the changes that are on the way. There will be a lot of hormonal changes that will make you tired and you will want to get ample rest and sleep. 

  • Change In Appetite

You will feel more hungry. Sometimes you might be wondering what’s wrong with you because you have eaten just now and you are hungry again. This happens because now the body wants to provide nutrients for the growing embryo. So, you are definitely going to eat more. You can see that you are craving a wide variety of food items. If this happens, do not forget to eat healthily. 

  • Nipple Darkening

The color of the nipples changes and they will start taking when you are carrying. It is the preparations that the body makes for the mother to be able to breastfeed the newborn after the delivery. 

These are some of the major changes that would happen to everyone. There can be other changes too. However, just because you are more sleepy, more hungry and your nipples are darkening it does not necessarily mean that you are pregnant. So. always make sure that all these symptoms are pointing towards pregnancy by getting tested. 

The Bottom Line

You can know whether the hCG levels are high by some common symptoms that will be visible on your body. However, it is best that you do not jump to any conclusions and make assumptions. Always remember that you are to get expert advice from a medical care expert or gynecologist.


Q. What hCG level confirms pregnancy?

If your hCG levels are higher than 25  mIU/mL, then you can be considered pregnant. If the levels are below 5  mIU/mL, then there is no chance that you are pregnant. If the hCG levels are between 6  mIU/mL and 24  mIU/mL, then there are chances for you to test both positive and negative for pregnancy. In that case, you are to check the levels again to see whether they have increased, and if so you are pregnant. 

Q. What hCG level indicates miscarriage?

Since hCG levels rise with the progress in the growth of the fetus, you can determine whether you have had a miscarriage by checking the hormonal levels. If the levels seem to be lower and declining from the previous measurements then it might be a sign that you have suffered a miscarriage. If your hCG levels were 120 mIU/mL and if it has fallen to 80  mIU/mL in a 2-day difference it means that the body is no longer producing the hormones and also that there has not been a development in the growth of the embryo. 

Q. Can the hCG test detect twins?

The levels of hCG present in your body can not be used as an end test to detect whether you are having twins. If you need to know that, it can be found via an ultrasound test that will detect two heartbeats. 

About the Author

Nicole Carter is a dedicated and passionate nutritionist, committed to helping individuals achieve their health and wellness goals through the power of proper nutrition. With a Bachelor's degree in Nutritional Science and years of practical experience.

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