Is pregnancy possible with a negative test?

The HCG test determines an early pregnancy, based on the establishment of a specific hormone. This chorionic gonadotropin, which is produced the next day after implantation or attachment of a fertilized egg to the wall of the uterus. The test uses immunochromatography, it is based on the interaction of hCG with antibodies to it. A significant sign of pregnancy is the appearance of the concentration of hCG in the body of a woman.

How does the pregnancy test work ? Test strips contain a compound of antibodies to the hormone with the dye. When the urine sample hits the strip, this conjugate interacts with the hCG and a specific complex is formed. Often many people face false-positive test results, this usually shows poor-quality tests. Therefore, not all doctors trust them.

There is also such a thing as pregnancy in a negative test. As we know, with the help of the test, you can establish a hormone that is excreted by the placenta - this is hCG. It can be carried out in the laboratory, determining the result by blood or urine. He is quite reliable. In principle, after ovulation, you can already get a positive result. Implantation of the embryo takes about ten days, so it makes sense to wait until twelve days after ovulation. But even in this case, you can get a false-negative pregnancy test.

Tests differ from each other in different sensitivity. Many of them are designed for use from the first day of the menstrual cycle delay . Basically, by that time, the embryo is already implanted in the wall of the uterus. When two bands are shown on the test, and there is really no pregnancy, this is called a false positive result. This can happen if a woman takes hormonal medications. After abortion at an early stage, miscarriage or the removal of an ectopic pregnancy for some time, hCG may remain in the body, so the test can give a false positive result. There is no pregnancy, but the test shows positive.

To get a qualitative result, you need to make two definitions of hCG. The interval should be two to three days. When the level of hCG decreases, we can assume that pregnancy is no longer there. In general, false positive results are rare. More often than not, women are confronted with a result when hCG is negative, and there is pregnancy. False negative result may appear on a small pregnancy, and the level of hCG is still too low, and the test did not find it, so pregnancy is obtained with a negative test. It also happens that the test is substandard and not sensitive enough.

The reliability of it depends on a lot. As already mentioned, pregnancy with a negative test is not uncommon, and all because many tests of poor quality are being made now. When buying it for home use, it is necessary to consider the expiry date of the goods, observe the storage conditions. It is advisable to buy a pregnancy test in a pharmacy. There is still such a moment, pregnancy with a negative test can be the result of the fact that hCG is produced less. This happens in the pregnant woman, who is on the verge of miscarriage.

There are several other conditions that must be observed when testing. First, you should use the morning urine, because it contains the maximum amount of the hormone. Follow the instructions. It should be added that the state of the kidneys strongly affects the content of the hormone in the urine. As a result, you can get the wrong result, which will only lead to emotions. Therefore, we need to take seriously the recommendations that are set by specialists, since much can depend on the correctness of their implementation.