False negative pregnancy tests
Article : Pregnancy tests are not 100% accurate. They can provide a negative reading even when pregnant
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If you are interested to get some information about "false negative pregnancy tests", please read the following paragraphs.
First of all, false negative pregnancy tests can occur. Therefore, it is possible for a woman to be pregnant although she has had a negative pregnancy test result.
In order to understand how these false results can occur, it is necessary to understand how the pregnancy tests work:
First of all, home pregnancy tests are supposed to prove beta human chorionic gonadotrophin, the pregnancy hormone, which is responsible for the production of oestrogens and gestagens in the ovary. Nowadays, home pregnancy tests are so sensitive that normally a reliable test result is already available 6-8 days after the egg cell has been fertilized which is about 2 days after its embedding into the uterus.
But it might be due to the following reasons that a pregnancy test shows a negative result although the woman is pregnant.
It might be that the test was taken too early, i.e. that the level of the beta human chorionic gonadotrophin hormone was not high enough for the hormone to be detected. It is also possible that the best-before date of the pregnancy test has already expired which can also lead to wrong results.
If a woman is in doubt about a possible pregnancy even after she has had a negative pregnancy test result, it is recommended that she should wait a couple of days and repeat the pregnancy test and make sure that the test's best-before date has not already expired. Another possibility is to make an appointment with her gynaecologist in order to verify a possible pregnancy in an early ultrasound.
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