False-Negative Pregnancy Test

Definition - What does False-Negative Pregnancy Test mean?

A false-negative pregnancy test occurs when a pregnancy test indicates conception has not occurred, when it actually has. The most common reason for this anomaly is that the test was not taken according to direction. False-negative pregnancy results are quite rare, as most pregnancy tests have high levels of accuracy.

FertilitySmarts explains False-Negative Pregnancy Test

When an embryo implants into the endometrium, the body recognizes a pregnancy has occurred and begins to produce increased levels of the human chorionic gonadotropin (hCG) hormone. A pregnancy test measures the amount of hCG in a woman’s blood or urine. Home pregnancy tests use urine the analyze the hCG levels.

Several situations can cause a false-negative pregnancy test:

  • Test was not taken correctly
  • Test was taken too soon
  • Urine was too diluted
  • Strips are poor quality or low sensitivity

If you missed a period and are experiencing signs of pregnancy, but a home pregnancy test comes back negative, repeat the test several days or a week later. Take the test first thing in the morning, being sure your urine has not been diluted with water or other liquids. If your period does not begin, and tests continue to indicate no pregnancy, schedule an appointment with your health care provider.

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