What different causes of the negative pregnancy test?

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home pregnancy test is very accurate when the instructions are properly followed. False positives are very rare, but false negatives are more common. The most common causes of a false negative pregnancy test are testing too early, they cannot follow the instructions and read the results after the assigned time.

To understand how a negative pregnancy test can happen, it is important to understand how pregnancy tests work. The home pregnancy test includes urination on the absorption belt. This strip changes color to indicate the presence of human chorionic gonadotropin (HCG), a hormone that is found only in pregnant women. HCG detected by pregnancy tests is not created until fertilized eggs implanted into the uterine wall, which can last up to two weeks after conception. Most women will not produce enough HCG to register on the pregnancy test until the time of their periods of time is due.

Test of early pregnancy can sometimes detect pregnancyBefore the missed period, but the most accurate results come from testing a few days after the missed period. HCG levels usually usually double every two days during pregnancy, so repetition of the test just a few days later can lead to a positive result. In timely testing, women are recommended to use the first morning urine because it tends to be the most concentrated and therefore contain the highest level of HCG

A negative pregnancy test can also be caused by poor testing technique. Most tests in domestic pregnancy need a certain amount of urine to be assessed. Holding the test in an incorrect position during urination sometimes leads to insufficient amount of urine to soak the test strip. Some women consider it useful first to urinate into a cup and then soak the test belt in the cupcaple the right saturation.

Another possible cause of a negative outcome of pregnancy tEstu, although she is really pregnant, is waiting for too long to read the results. It is important to follow the instructions provided with a home pregnancy test very carefully. Many tests must be read within ten minutes before the results become invalid. The positive line on the test can fade quickly, causing it to look like a negative result.

Whenever there is doubt about the accuracy of the negative pregnancy test, further testing is recommended. Using a test from another brand and comparing the results can illuminate the situation. Another way to eliminate doubts is to wait a few days for more HCG to be built and then repeats the test. A blood test in the doctor's office can pick up a lower level of HCG and bring more convincing results.