can you have a negative blood pregnancy test?
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False negative results (test is negative, but you are actually pregnant) usually occur if the blood pregnancy test was performed too early (a rule of thumb is that it takes at least 7 days after conception for the test to show a positive result).
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A Word From Verywell. If your period is late but your pregnancy test is negative, there are a number of possible explanations. Call your doctor if you believe that you are pregnant. They may perform a blood test, which can detect not just the presence of hCG, but the amount.
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A positive test result is almost certainly correct. A negative result is less reliable. If you get a negative result and still think you're pregnant, wait a few days and try again. Speak to your GP if you get a negative result after a second test but your period hasn't arrived.
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Urine HCG tests often return false-negative results, particularly very early in pregnancy. This can be stressful and demoralizing to people struggling to become pregnant. Blood tests are typically more accurate, though even these may fail to pick up low levels of HCG in early pregnancy.
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Can a pregnancy test come up negative if I didn't pee enough? A false negative on a home pregnancy test is possible, but extremely unlikely. As long as your urine got on the test's absorbent strip, it should be accurate. You can always take another test if you're worried you might have missed.
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If you get a negative test result and you think you are still pregnant – take another test on the day you expect your period. If your period is overdue, test again three days later. If you are still unsure, see your doctor.
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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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Another common reason for getting a false negative is not having enough hCG in the urine you test. Early on in pregnancy, you can dilute the hormone concentration in your urine if you drink a lot of water before testing. This is more likely to happen in very early pregnancy when you take the test later in the day.
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False negative pregnancy tests do occur. In fact, it is possible to have a negative result on a pregnancy test and actually be pregnant.
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False Negative Pregnancy Tests In fact, it is possible to have a negative result on a pregnancy test and actually be pregnant. Here is how it works: The goal of a urine pregnancy test is to test the urine for a hormone called hCG (Human Chorionic Gonadotropin).
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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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Accuracy. As with urine/home pregnancy tests, it is possible to end up with false results (both negative and positive) from a blood pregnancy test.
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If you test too early, a test may not pick up enough hCG to turn positive. 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.
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False negative tests are common. In fact, many women get false negative tests before they get a positive. This is because the body's HCG levels have not yet risen sufficiently high to indicate that a woman is pregnant. In many cases, a woman will later get a positive test if she just waits a few days.
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Pregnancy tests vary in their sensitivity (how soon they can detect HCG and what level of HCG needs to be present). You can find information on the packaging about how sensitive your test is. If you still think you're pregnant after a negative result, wait a few days and try again.
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Rise of pregnancy hormone GeburtshilfeFrauenheilkd 2014;74(7):661–669. If you test too early, a test may not pick up enough hCG to turn positive. 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.
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1 Pregnancy tests can be negative However, in some rare cases, you may be pregnant, but not have enough HCG in your system – which means you won't get a positive reading.