Negative test during pregnancy – when it happens?

Can a test during pregnancy show one strip? False negative test results: reasons, reviews. Pregnancy is, and a negative test – find out why!

Each woman agrees that the use of such «wise» inventions, as Test for pregnancy, Always preceded very strong excitement. This test can be used at home or on the road, at any time that you are convenient, eliminating your unrest and the resulting question – is pregnancy occurred.

But is these tests always truthful, can I believe their results? Are there any mistakes?

False negative result during pregnancy – when it happens?

As the long-term practice of using tests for making pregnancy shows, False negative results happen quite often, T.E. When pregnant, the tests persistently show a negative result. And it is not at all that this or that firm produces «defective» or poor-quality tests – on the definition of the most truthful results have an influence and other factors, in particular – the conditions for the use of pregnancy tests. But let’s wonder everything in order.

In many ways, the accuracy of the result depends on its quality and proper and timely use. The result may affect literally everything: ranging from banal non-compliance of the instruction, ending with the pathology of the fetus development. In any case, when you have a menstruation delay for more than a week, and the test shows a negative result, you have a significant reason to visit the gynecologist.

Reason # 1: The test is carried out too early

The very first and most common cause of obtaining a false negative result when using pregnancy test – Testing in very early timing. Normally, the level of human chorionic gonadotropin (HCG) increases significantly to the date of the estimated next menstruation, which makes it possible to establish a fact of pregnancy with an exact probability. But sometimes this indicator in the first weeks of pregnancy women remains low, and then the test shows a negative result. When doubts arise, the woman should repeat testing a few days later, and at the same time it is desirable to use the test of another company.

Each woman knows the estimated date of the next menstruation, unless, of course, she has no pathology accompanied by a disruption of the menstrual cycle. But even with a normal cycle the date ovulation can be very shifted in time by the beginning of the cycle, or to its end. There are rare exceptions when ovulation occurs in the days of the beginning of the monthly – this is influenced by various factors or pathological processes in the body of a woman. If ovulation occurred quite late, then by the first days after the date of the previously estimated monthly level of HCG in the urine of a woman can be very low, and a test for determining pregnancy will show a false negative result.

In the blood of a woman at the occurrence of pregnancy, HCG appears almost immediately. A few days later, this hormone can be detected in the urine, but in a relatively small concentration. If speak about Catch, In the blood, the chorionic gonadotropin of a person is detected through week After conception, and in the urine through 10 days – two weeks After conception. It is important to keep in mind that the level of hCG after the occurrence of pregnancy in its earliest periods increases for 1 day by about two times, but after 4-5 weeks from conception, this figure drops, since the forming of the embryo placenta takes on the function of developing the necessary hormones.

Women’s opinion:

Oksana:

When delayed monthly in 2 days, as well as with indirect signs of the onset of long-awaited pregnancy (burning and sensitivity of nipples, drowsiness, nausea), I did a test to determine pregnancy, it turned out to be positive. In the same week, I went to the gynecologist, she appointed me the necessary examination and an additional test to determine pregnancy on hCG in the blood. It turned out that this test I passed two weeks after the estimated date of the following menstruation, and the result turned out to be dubious, that is, hgch = 117. It turned out that my pregnancy did not develop, and froze early.

Marina:

When I was a pregnant daughter, after a delay in the monthly, I immediately made a test, the result was positive. Then went to the gynecologist, he prescribed an analysis of the HCG blood. A week later, the gynecologist said to go again by the HCG blood – the first and second results were low. The doctor suggested the undeveloping pregnancy, said to revoke the analysis again in a week. Only when the period of pregnancy was more than 8 weeks, HCG increased, and the heartbeat was listened to the ultrasound, determined that the fetus develops normally. From the first analysis, it is too early to draw conclusions, especially if you use tests at home, or if your term of your pregnancy is still too small.

Yulia:

My girlfriend, going to celebrate a birthday, bought a test to be sure – you can use alcohol, or not. In terms of time then this day went out just for the day of the alleged menstruation. The test showed a negative result. Birthday noted noisy, with abundant recovery, and then a delay was revealed. After a week test «BBTest» showed a positive result, which later was confirmed by a visit to the gynecologist. It seems to me that in any case a woman suspecting a pregnancy should do a pair of tests with a period of time to make sure that it is necessary to make sure that or the absence of pregnancy.

Cause # 2: Bad urine

The second common cause of obtaining a false negative result of the test with the past pregnancy is usage for him strongly diluted urine. Dorganic drugs, excessive reception of the liquid strongly reduce the concentration of urine, and therefore the test reagent cannot catch the presence of HCG. To obtain reliable results testing Pregnancy It is necessary to carry out in the morning, When the concentration of hCG in the urine is very much rising, and at the same time – from the evening it does not take a lot of liquid and diuretic drugs, there is no watermelon. A few weeks later, the concentration of human chorionic gonadotropin occurs so much that the tests are unmistakably determine it even in a strong diluted urine.

Women’s opinion:

Olga:

Yes, I also had this – got pregnant in the heat. Very tormented thirst, I drank literally liters, plus watermelons. When I found a small delay in 3-4 days, the test applied, which I advised a friend, as the most accurate – «Clear Blue», The result was negative. As it turned out – the result was false, because visiting the gynecologist dispelled all my doubts – I was pregnant.

Yana:

I suspect that I had exactly the same – abundant drink influenced the test results, they were negative up to 8 weeks of pregnancy. It’s good that at that moment I planned and waited for pregnancy without drinking alcohol and without taking antibiotics, and in another case a negative result may be brutally deceived. And the health of the kid will be at risk ..

Reason number 3: Test was incorrectly used

If, when using the test to determine pregnancy, important basic rules were violated, the result may also turn out to be false negative. For each test, detailed instructions are attached, in most cases – with pictures that will avoid errors when applied. Every test that is sold in our country must have instructions in Russian. In the process of testing, it is not necessary to hurry, it is very important carefully And scrupulous Perform everything The most important Points, to get the most reliable result.

Women’s opinion:

Nina:

And I bought a friend in my request, turned out to be  «ClearBlue». The instruction is understandable, but I, having decided to use the test immediately, did not read it, and almost spoiled the inkjet test, as I did not come across such.

Marina:

I believe that tablet tests require special accuracy – if it is written that add 3 drops of urine, then accurately and measure this amount. Of course, many girls waiting for pregnancy want to pour in «window» more so that the test show pregnancy is probably – but you know everything that this is self-deception.

Cause No. 4: Problems with an excretory system

To obtain a negative test result, various pathological processes in the body of a woman, disease affect the pregnancy of pregnancy. So, with some Diseases of kidneys The level of hCG in the urine of pregnant women does not rise. If in the urine of women as a result of pathological conditions is present protein, then the test for the definition of pregnancy can also show a false negative result.

If, after collecting the urine, a woman for some reason cannot conduct pregnancy testing immediately, a portion of urine must be stored in the refrigerator not more than 48 hours. If Urine was stupid, For one or two days, stood in a warm place, at room temperature, the test results can be false negative.

Women’s opinion:

Svetlana:

I had it with an early toxicosis of pregnancy, when I already knew exactly that pregnant. I was prescribed analysis to the level of hormones in the blood, as well as the analysis of the HCG, which turned out to be that I am not pregnant at all, like this! Even earlier, I was given chronic pyelonephritis, so I experienced a lot with tests from the very beginning of pregnancy – that is, the pregnancy, it is not over the tests, I already believed myself. But everything ended well, my daughter!

Galina:

I got pregnant just after it suffered a strong bronchitis. Apparently, the body was so weakened that up to 6 weeks of pregnancy and «Frau», and «Bi-sur» showed a negative result (2 times, 2 and 5 weeks of pregnancy). By the way, at the 6th week of pregnancy first showed a positive result test «Frau», but «Bi-sur» continued to lie ..

Reason number 5: pathology of development of pregnancy

In some cases, the false negative result of the pregnancy test is obtained at ectopic pregnancy. The false-negative result of pregnancy testing can be obtained and early threats of miscarriage, with an abnormally developing pregnancy and Family embryo.

With improper or weak attachment of the fetal egg to the wall of the uterus, as well as at some associated pathological factors affecting the formation of the placenta, the test for determining pregnancy can show a false negative result due chronic placental fetal failure.

Women’s opinion:

Yulia:

I did a test to determine pregnancy, when the delay was only one week. Honestly, at first I sinned on a defective brand test «rest assured», because two strips manifested themselves, but one of them was very weak, barely distinguishable. The next day I did not calm down, and I bought a test «Evitest» – the same thing, two stripes, but one of them barely distinguishes. I went to the doctor immediately, sent to the diagnosis of hgch blood. It turned out – an ectopic pregnancy, and the fruit egg attached at the exit of the pipe. I believe that with dubious results, it is necessary to immediately apply to the doctor, since in some situations the delay and the truth – «death like».

Anna:

And I have a false-negative result of the test showed a frasonable pregnancy for 5 weeks. The fact is that I was tested for 1 day before the estimated date of menstruation – Test «Fraience» showed confident two stripes. I had a doctor, a survey was held – everything was fine. Since I am 35 years old, and the first pregnancy, made an ultrasound at the very beginning – everything is fine. But before the next reception, the gynecologist decided to experience the remaining and not intimidated test of the test for curiosity – he showed a negative result. Considering this mistake, went to the doctor – the next examination showed that the fruit egg slept, it has a non-circular shape, pregnancy does not develop from 4 weeks ..

Reason number 6: The test does not show pregnancy due to improper storage

If the test for the definition of pregnancy is purchased at the pharmacy, you can not doubt the correct compliance with the conditions for its storage. Another thing, if the test is already Overdue, Long time lay for a long time, was subjected to temperature differences or stored with high humidity, bought from hands in a random place – in this case, the likelihood is that it will be unable to show a reliable result. When buying tests, even in pharmacies should be checked by its shelf life.

Women’s opinion:

Larisa:

I want to express my indignation about the test factor-honey «FAITH». Crushing in their hands, garbage strips that do not want to believe! When I urgently needed a test to determine pregnancy, there were only those in the pharmacy, I had to take. Although he was not overdue, sold in a pharmacy – he originally had such a kind that he was already in alterations. As confirmed test testing that I spent a few days after the test «FAITH», the result he showed right – I’m not pregnant. But the appearance of these strips have such that after them I want to spend another test to find out, finally, the truth.

Marina:

So you are lucky! And this test showed me two stripes when I was afraid of. I must say that I spent a lot of unpleasant minutes of painful waiting for the correct result. Companies fit to make a lawsuit for moral damage!

Olga:

I join the opinions of girls! This is a test for those who love the thrill, not otherwise.

Reason number 7: low-quality and defective tests

Products of various pharmaceutical companies greatly varies in quality, and therefore the test result using different tests carried out at the same time may vary. To obtain reliable results, you should use tests not one, but two or more times, with periodicity of several days, and better – buy tests of different firms. By the way, when buying a test to determine pregnancy, there is no need to follow the rule «The more expensive, the better» – The price of the dough itself in the pharmacy does not affect the accuracy of the result obtained. Read O The most truthful tests for pregnancy.

Women’s opinion:

Christina:

Once it was that I deceived me to whom I, in general, trusted more than others – «Biocard». With a delay of 4 days, he showed bright two stripes, and I went to my doctor. As it turned out, pregnancy was not – it was confirmed and ultrasound, and blood test for hCG, and who came later monthly ..

Maria:

As I live with my boyfriend, somehow decided to buy several tests at once «FAITH», So that they lay at home. Immediately say. That I never used tests for pregnancy, since we were protected with condoms. And here curiosity pulled me to use the test for another three days before the start of menstruation. Made a test – and almost fainted, because he clearly showed two strips! Children have not yet planned yet, so the thunder happened among the clear sky and for my boyfriend. The next day I bought a test «Evitest» – one strip, cheered! And monthly came the next day.

Inna:

And I got a defective test «Ministerist». After conducting the procedure, I saw on the dough not one strip … And not two stripes … And the dirty-pink spot, vague all over the surface of the sticks. I immediately realized that the test was not at the height, but before testing testing, I still felt the chill from fear – what if pregnancy?

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