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Global Cancer Research. Cancer Research Infrastructure. Clinical Trials. Sometimes a fertilized egg can implant itself outside of the main cavity of the uterus. This causes an ectopic pregnancy to occur. Ectopic pregnancies usually happen if a fertilized egg gets stuck in a fallopian tube during its journey to the uterus.
This type of ectopic pregnancy is also known as a tubal pregnancy. The embryo will still produce hCG, even though it has implanted in the wrong place. That can cause a false-positive reading on an at-home pregnancy test. Ectopic pregnancies are medical emergencies. Ectopic pregnancies can be damaging to the woman if left untreated. Extreme blood loss or loss of the reproductive organs can occur.
You may continue to test positive for pregnancy following the loss of a pregnancy, either through miscarriage or abortion. During pregnancy, hCG levels continue to rise as the placenta grows, doubling every few days and peaking at around 10 weeks. The hormone can remain in your blood and urine for up to six weeks following the end of the pregnancy. This will cause hCG levels to remain elevated.
When this occurs, a minor surgical procedure called a dilation and curettage D and C is often required to remove the tissue. Check the expiration date before using the test. Even with these safeguards, user error can occur. One of the most common mistakes is taking the test too early during your cycle.
This can cause either a false negative or a false positive. Use the test when your urine is very concentrated, like when you first wake up in the morning. Leaving the dipstick in your urine stream for the exact amount of time allotted is also important.
Consider setting a timer on a stopwatch or your phone. It's also available on BBC Sounds. Get in touch. Read more from Reality Check. Follow us on Twitter. Image source, Reuters. What is a false positive? Randomness is the key. Image source, PA Media. There are other signs of real positive results.
Set a timer to keep track. The next two points are unique in that they indicate the presence of BhCG in the body so they are technically accurate in giving a positive result.
However, an ectopic or chemical pregnancy sadly is not viable. As the pregnancy grows, it can cause the tube to burst rupture. A rupture can cause major internal bleeding. This can be a life-threatening emergency that needs surgery. If you think you have an ectopic pregnancy, or have a positive pregnancy test paired with severe pain on one side of the lower abdomen and spotting, seek immediate medical help as soon as possible.
A chemical pregnancy is a miscarriage that happens before week five of the pregnancy when an embryo implants in your uterus but it never takes hold. The loss happens so early that you may not even know you're pregnant. However, the embryo produces hCG and can cause a false-positive on a pregnancy test. This situation is known as a chemical pregnancy. The emotional strain from false-positive results can be severe and mentally taxing for you and your family.
We recommend waiting to use at-home pregnancy tests until one week after the expected start of your period. We also recommend getting a confirmed diagnosis at a local clinic or with your healthcare provider. You can always book a minute appointment for a free pregnancy test at The Source clinic nearest you.
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