The vast majority of abortion procedures result in the successful termination of a pregnancy. However, it is possible to have a positive pregnancy test shortly after the procedure. While this can be unexpected and confusing, it should be noted a positive pregnancy test does not necessarily indicate that the abortion method has failed. This article will discuss a few reasons why women may experience a positive pregnancy test after an abortion.
Most abortions are successful and without complications.
Women can test positive for pregnancy after an abortion due to the residual pregnancy hormones that remain in the body for 4 to 6 weeks.
Less than 5% of patients experience an incomplete abortion or an ongoing pregnancy, which may be the reason for a positive pregnancy test and require medical attention.
Obtaining medical care and guidance when terminating a pregnancy will support a successful abortion.
Possible reasons for a positive pregnancy test after an abortion
It can be worrying to receive a positive pregnancy test result after terminating a pregnancy. Here are a few reasons why it can occur.
The pregnancy hormone human chorionic gonadotropin (hCG) typically decreases by 50% within 24 hours after an abortion. However, residual levels may remain present in the body, causing a false positive on pregnancy tests if taken shortly after an abortion.
Because hCG can remain in the body for 4 to 6 weeks, a positive pregnancy test may occur for weeks after an abortion.
A positive pregnancy test may also indicate that the abortion method was unsuccessful and the pregnancy has continued. A failed abortion that results in an ongoing pregnancy is an infrequent complication that may occur with either surgical or medical abortions. Ongoing pregnancy after a medical abortion has been reported in only 2 to 3% of cases.
An incomplete abortion may also be the source of a positive pregnancy test. In this case, some tissue from the pregnancy remains in the body. However, this is also rare, with a frequency of only 2 to 5%.
What causes or contributes to unsuccessful abortions?
The risks of experiencing a failed or incomplete abortion increase for various reasons. With surgical abortion, women with very early pregnancies and those with uterus anomalies are at a higher risk. With medical abortion, incorrect usage and lack of medical supervision increase the risk of an unsuccessful abortion.
However, abortion procedures have high success rates when administered by qualified medical professionals, medical and surgical abortions are more than 95% and 98% effective, respectively. Proper supervision and appropriate follow-up are important for safely ending a pregnancy, and evaluating for and addressing any complications that may arise.
A positive pregnancy test after an abortion may result from the presence of pregnancy hormones or from a failed or incomplete abortion. If you have concerns about a positive test result after an abortion, contact your doctor or abortion provider. They will help assess the situation and (if needed) determine the best course of action for you. Proper follow-up care and monitoring will help ensure a safe and successful abortion.
When is the earliest I can take a pregnancy test after an abortion?
It is recommended that you wait two to three weeks after an abortion before taking a pregnancy test. However, keep in mind that it can take up to 4 to 6 weeks for your body's hormone levels to return to normal. Always consult your healthcare or abortion provider about when to use a pregnancy test.
What should I do if I experience a positive pregnancy test after an abortion?
While incomplete abortions or continued pregnancy after an abortion are rare, you should contact your doctor if you have concerns about your abortion, especially if you continue to experience pregnancy symptoms (such as nausea or missed periods) or other difficulties.
How will I know if the abortion was successful?
For a surgical abortion, your provider will immediately check whether the procedure was successful. For medical abortions, you may receive a special pregnancy test, be advised on when to take a home pregnancy test, or undergo an ultrasound or blood test for confirmation at your follow-up visit.
- American Journal Of Obstetrics And Gynecology. Change in serum beta-human chorionic gonadotropin after abortion with methotrexate and misoprostol.
- Contraception. Efficacy and safety of medical abortion using mifepristone and buccal misoprostol through 63 days.
- Contraception. Efficacy of a low-sensitivity urine pregnancy test for identifying ongoing pregnancy after medication abortion at 64 to 70 days of gestation.
- Human Reproduction. Induced abortion.