When does a pregnancy test show an accurate result? Can a pregnancy test be wrong
Many women planning a pregnancy care about how many days to do a pregnancy test after contact in order to get a reliable result. Manufacturers of such devices almost unanimously assert that the result will be accurate only after a delay in menstruation. Is it really? Is it really impossible to find out about your new position a little earlier? Today you can get an answer to this and some other exciting questions. From the article you will learn:
- When does a pregnancy test show an accurate result?
- On which day of the cycle is a study needed?
- What are the reasons for the erroneous result?
It should immediately be said that much depends on the individual characteristics of the woman and the quality of the purchased products.
Pregnancy test: one strip or two?
The simplest pregnancy tests are called stripes. They became one of the first such constructions. Many women use them to this day. The advantage of such devices is low cost. To create a manufacturer uses a paper base, which is applied to the reagent. The indicator shows the result: one or two strips. These devices should be used only after a delay.
Tablet PCs work by the type of strip strips. In fact, these are the same indicators placed in a plastic box. For research it is necessary to drop the material into the established window, and then track the result: one or two strips.
Inkjet tests appeared a little later, they cost a little more than their two predecessors. If the previous options need to be used only after a delay, then how many days to do a pregnancy test in a jet version? Most manufacturers indicate that such devices define a new position at 10-14 days after contact.
Completes the list of tests electronic device.A significant disadvantage of such devices is that they have a high cost. But you do not have to evaluate one or two strips. The answer “have a pregnancy” or “no pregnancy” will be displayed on the screen. Such devices - the manufacturer promises - show pregnancy a few days before the estimated monthly.
Long cycle study
When the pregnancy test will show the exact result, if the cycle length is more than 35 days? Relatively few women have a long cycle. But they also want to know what day to do the research. Indeed, many manufacturers indicated that diagnostics should be started from the 28th day. Will the test show a reliable result during this period?
In women with a long cycle, ovulation is shifted. With a 35-day period, it occurs at about 21-23 days. It is quite natural that the result of testing conducted on the 28th day will be negative. To get really accurate data, women with a long cycle need to conduct research, at least 33-35 days, or even later.
Frequent menstruation and testing
The time when the pregnancy test will show the exact result depends on the frequency of menstruation. There are some representatives of the weaker sex, in which the bleeding is repeated once every three weeks.With a short cycle of 20-21 days, on what day can you conduct testing?
Gynecologists say that the feature of these patients is early ovulation. This means that the egg leaves the ovary approximately on days 7–9 of the cycle. Testing should be carried out before menstruation: on days 19-22.
Can a pregnancy test be wrong?
Is the study able to give the wrong result? In what cases is a pregnancy test wrong?
Since when to carry out diagnostics - you already know. If we proceed to the study earlier, it may well be unreliable. The fact whether a test can be mistaken depends on the type of instrument. Most often give the wrong answers strip strip. This happens because of the manufacturer's savings. A small amount of reagent may be applied to the paper. There were situations when such was completely absent. All this remains on the conscience of the manufacturer, as a woman, having received a certain result, will not begin to understand whether he is true or not. In addition, it is advisable to evaluate inkjet, tablet and paper tests only within 10-20 minutes.
Much depends on the sensitivity of the test strip. Now you can find devices with sensitivity of 10, 15, 20, 25 and 30 IU. The lower the value, the earlier the device is able to detect the presence of pregnancy hormone in the urine. But, as practice shows, too sensitive tests can be mistaken with a high probability. Consider what could be the reason for the false answer.
False negative result
What does a weak second strip on a pregnancy test mean? Many women rate this answer as negative. But after a while they still learn about their new position. The main reason for a false negative response is early diagnosis. If you test before the level of the hormone reaches a certain point, you will receive one strip. Also, a negative result in the presence of pregnancy can be determined for the following reasons:
- the use of diluted urine (if you drank a large amount of fluid shortly before the test, the concentration of the hormone will be reduced);
- violation of the rules of testing (when using large amounts of material or touching the fingers to the place of the appearance of the result, the reagent may be eroded);
- use of expired products.
In order to convince that a true negative result is a pregnancy test, how long should it be carried out? Do the research right after the delay. For more expensive and sensitive tests - one or two days before.
False positive result
A weak second strip on a pregnancy test may be false positive. Often women themselves represent her, wanting to be in position. The game of imagination makes believe in a new state. As a result, a great disappointment comes when the next menstruation comes. Pregnancy test 2 strips can show if it is incorrectly evaluated. Most manufacturers limit the accuracy of the result to ten minutes. Further, the test response will no longer be significant. If you wait more than 10 minutes, the place of the reagent begins to get wet, looming the ghost of the second strip. The reasons that the pregnancy test shows 2 stripes falsely can be the following situations:
- neoplasms in the uterus or malignant tumors;
- recent miscarriage or incomplete abortion;
- use of hormonal drugs.
Statistics show that a false-positive result is much less common than a negative response with an existing pregnancy.
With ectopic pregnancy
It should be said separately about such a pathology as an ectopic pregnancy. With her, the level of chorionic gonadotropin in the body grows much slower than during normal pregnancy. Therefore, the second strip on the test can be barely noticeable, darken very slowly. There is a misconception that tests do not show an ectopic pregnancy. In fact, high-quality devices are able to identify a new state, but somewhat later than with an embryo developing in the uterus.
If you are tired of finding out the answer.
Now the answer to the question when the pregnancy test will show the exact result is not a mystery to you. However, many women convulsively conduct research just a few days after sexual intercourse. Such manipulations, rather, will not give the right answer. If you are bothered to learn about the new situation, it is better to visit the laboratory. A blood test to determine the level of human chorionic gonadotropin is carried out within a few hours. However, it is ten times more reliable than the test strips. The fact is that in the blood the concentration of this hormone is always higher.
When to do a pregnancy test depends on the woman. Some representatives of the weaker sex gives pleasure daily to carry out such manipulations. You can start testing right after sexual intercourse, but you should not take the result seriously. You can get a real answer to an exciting question only after a delay or a couple of days before the expected monthly.