HCG Levels After Medication Abortion: Common Concerns - Obstetrics and Gynecology

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Medication abortion issues


Dear Doctor: I had a medical abortion on July 24th, and now it's almost a month later, but why do I still see two lines on the pregnancy test? One is the control line, and the other is the test line, which is faint.
I have tested twice with home pregnancy tests, and the result line is still very light.
I previously asked a doctor, and they mentioned it could be residual HCG.
I would like to know why, after almost a month, there are still two lines.
I found some information indicating that some people return to a single line within a week after a medical abortion.
Currently, I have symptoms similar to those before menstruation.
If there is residual HCG, will my period come back normally? I have fibroids and endometriosis; could poor uterine contractions affect the rate at which residual HCG is cleared?

Yu Qing, 30~39 year old female. Ask Date: 2020/08/22

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it is possible that it hasn't been completely cleared out yet.
I recommend consulting your original obstetrician-gynecologist.
Wishing you good health.

Reply Date: 2020/08/22

More Info


Understanding HCG Levels After Medication Abortion: Common Concerns
After a medication abortion, it is common for individuals to have lingering concerns about their HCG (human chorionic gonadotropin) levels. HCG is a hormone produced during pregnancy, and its levels typically drop significantly after a successful abortion. However, some individuals may still see faint lines on pregnancy tests weeks after the procedure, leading to confusion and anxiety.

In your case, having two lines on a pregnancy test nearly a month after a medication abortion could indicate that there is still some HCG present in your system. This residual HCG can be due to several factors, including incomplete expulsion of pregnancy tissue or the natural slow decline of HCG levels. It is important to note that HCG can remain detectable in the body for several weeks after a pregnancy ends, especially if the levels were initially high.

Typically, HCG levels should decrease to undetectable levels (usually less than 5 mIU/mL) within a few weeks after a medication abortion. However, the timeline can vary significantly from person to person. Some individuals may return to baseline levels within a week, while others may take several weeks or even months. Factors such as the initial HCG level at the time of the abortion, individual metabolic differences, and the presence of any retained products of conception can all influence how quickly HCG levels decline.

Regarding your concerns about menstruation, it is possible for your menstrual cycle to be affected by the presence of residual HCG. If HCG levels are still elevated, it may delay the return of your menstrual cycle to normal. However, once HCG levels drop sufficiently, your cycle should resume, although it may take some time for it to regulate fully.

You mentioned having uterine fibroids and endometriosis (chocolate cysts), which can also impact uterine contractions and the overall health of your reproductive system. These conditions may contribute to slower recovery of HCG levels and could potentially affect your menstrual cycle. Uterine fibroids can cause changes in menstrual flow and cycle regularity, while endometriosis can lead to additional complications that may affect your reproductive health.

If you are experiencing symptoms similar to those before your period, it could be a sign that your body is preparing for menstruation. However, it is essential to monitor your HCG levels through blood tests as advised by your healthcare provider. If your HCG levels are still elevated, your doctor may recommend further evaluation to ensure that there are no retained products of conception or other complications.

In summary, seeing two lines on a pregnancy test nearly a month after a medication abortion can be concerning, but it is not uncommon. The persistence of HCG in your system can be influenced by various factors, including individual differences and underlying health conditions. It is crucial to follow up with your healthcare provider for blood tests to monitor your HCG levels and to discuss any ongoing symptoms or concerns. They can provide you with personalized guidance and support as you navigate this process.

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