is it possible to have a negative hcg test and still be pregnant?
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Is it possible to be pregnant and get a negative pregnancy test result? Yes, it is possible. Getting a negative result doesn't mean you're not pregnant, it may just mean your hCG levels are not high enough for the test to detect the hormone in your urine.
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Chemical pregnancy It's possible to have a positive pregnancy test even if you aren't technically pregnant. This is called a false positive. It's sometimes caused by a chemical pregnancy. A chemical pregnancy occurs if a fertilized egg, known as the embryo, is unable to implant, or grow, very early on.
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However, negative results are less reliable. For example, if you do a pregnancy test too early, you could be pregnant, but there may not be enough HCG in your body to give a positive test result. Pregnancy tests vary in their sensitivity (how soon they can detect HCG and what level of HCG needs to be present).
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If your test appears negative but you still suspect you might be pregnant, then you should make an appointment with your GP as soon as possible for another test. False negatives may occur from time to time, but a positive pregnancy test is almost certainly correct.
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A false positive pregnancy test is very rare with today's tests. A false negative test (a negative pregnancy test when the woman is pregnant) is unusual and usually due to the test being performed incorrectly. Also, over-the-counter pregnancy tests are basically the same as the ones done in your doctor's office.
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Traces of the administered hCG may still be in your bloodstream and detectable by a test even if implantation has not occurred. A false negative might occur as a low level of hCG may be undetectable in a urine test despite a pregnancy starting as these are less sensitive than the blood hormone tests we administer.
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Not Believing Positive Test Results If you are not pregnant, a false positive pregnancy test result is unlikely. The more likely explanation is that you had a chemical pregnancy (which produces enough hCG to turn a pregnancy test positive but miscarries shortly after) or a very early miscarriage.
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If your period is very late, or you've skipped your period, and you get a negative result, you are unlikely to be pregnant. If you are testing before the date of your expected period, you may be pregnant but your hCG levels are too low for the test to detect.
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If you are not pregnant, a false positive pregnancy test result is unlikely. The more likely explanation is that you had a chemical pregnancy (which produces enough hCG to turn a pregnancy test positive but miscarries shortly after) or a very early miscarriage.
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A pregnancy test kit is rarely wrong. It is more than 99 per cent accurate. Thus, if your test is negative, it means that you are not pregnant; However, if you are very early in your pregnancy and the test is done far too early, there could be an insufficient amount of urine hCG for the test to detect.
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However, while these early detection tests work for most people, every woman is different, and the quantity of the pregnancy hormone hCG doubles every 2 to 3 days. So, the short answer is yes, it's absolutely possible to record a negative result after missing your period, even if you are pregnant!
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False-negative results If an hCG test comes back negative, that generally means you're not pregnant. However, if the test was performed too early in the pregnancy, before your body has had time to produce enough hCG, you can get a false negative.
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Ironically, unusually high levels of hCG can cause the test to give a false negative result. A very rare cause of a false negative is if the hCG hormone in your body doesn't react with the anti-hCG chemicals in the pregnancy test.
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If you're testing before the day of your expected period, you may see a negative result – even if you're pregnant – if: Your test wasn't sensitive enough for early testing. You didn't use the first urine of the day, so concentration of hCG in your urine wasn't high enough.
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In fact false negatives – where the pregnancy test says you're not pregnant but you actually are – are more common than false positives. However, it's also important to say that this shouldn't give you false hope. A negative pregnancy test is still most likely to mean you're not pregnant.
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Women may get a negative test result on a urine or blood pregnancy test despite being pregnant. Although many factors can contribute to a false-negative pregnancy test, the hook effect occurs when the woman has a high concentration of human chorionic gonadotropin (hCG), the pregnancy hormone.
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One explanation for a false negative pregnancy test is what's called the hook effect. It's not common but sometimes this effect leads to urine and blood tests giving the wrong result. This error might happen even after you've had one positive pregnancy test and test again a couple days later.