Early Pregnancy Tests - May Cause False Negatives
February 14th, 2007Some pregnancy tests are “early” pregnancy tests. That means that they are designed to detect a small enough amount of the pregnancy hormone to determine if a woman is pregnant as early as the first day of a missed period, or even a day or two before the period is due. The fine print on the boxes will tell you that 65% of pregnant women had a positive result when tested two days before the period was due, and the percentage increased with each passing day. These are usually accurate, but the most accurate results are achieved after the period was expected. A woman will not get a false positive in most cases, but a negative result will occur if there is not enough pregnancy hormone detectable yet, even if the pregnancy is positive.
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