The easiest way to diagnose pregnancy at home is to do a pregnancy test.
This is the most affordable method for detecting early pregnancy, due to the possibility of acquiring it at an affordable price at any pharmacy.
In addition, the mechanism of action is incredibly clear and simple.
The tests are aimed at detecting in the urine a hormone, the production of which occurs in a woman in a position of particularly intense human chorionic gonadotropin (hCG). If there is no pregnancy, the aforementioned hormone can either be completely absent, or it can be contained in meager concentrations.
So, this article will answer the most common question for women - on what day after conception can a pregnancy test be shown? But first about the varieties of this device.
How accurate is the test result
This type of diagnosis is fairly accurate.
Manufacturers promise to get results up to 99%. But it is worth realizing that the accuracy of the diagnostic result depends on the type of test:
- Strip test (test strip). The simplest method of diagnosis. The test is arranged quite simply: the test strip is impregnated with a reagent. If the woman’s biological material contains the hormone HCG, the reagent recognizes it. The strip test is placed in a vessel with biological material, wait 5-10 seconds, then the result is assessed: one strip indicates absence of pregnancy, and two stripes indicate the presence. .
- Digital test. The main advantage of this type of diagnosis is the reliability of the result. Conducting research using such a test leaves no doubt as to the accuracy of the result, which is displayed with the help of the "+, -" signs. But the cost of such a test is much higher.
- Tablet test. Used by experts for the professional diagnosis of pregnancy. More expensive view, due to the complexity of the device. The principle of operation of the digital test is identical to the above. It consists in the interaction of biological material with a sensitive layer.
- Inkjet test The most modern look, the test of the third generation. The device of such a test is more complicated than all other types. The indicators obtained using this test are considered the most reliable. In addition, this type of diagnosis is more hygienic because it does not require prior collection of urine. It is enough to bring the receiving end of the test under the stream, wait a few seconds. Then evaluate the result. The high sensitivity of the inkjet test allows you to set a pregnancy 2-3 days before the estimated delay of menstruation.
| Type of test | Sensitivity test | Result accuracy |
|---|---|---|
| Strip test | 25 mME / ml | 95%
|
| Digital | 10-25 mME / ml | 100%
|
| Tablet | 10 mME / ml | 99%
|
| Jet | 10-25 mME / ml | 99%
|
When to do a pregnancy test
Experts recommend a diagnosis using morning urine, because it is the most concentrated. It is necessary to conduct a test on the second day of absence.
The hormone of human chorionic gonadotropin at this time has sufficient concentration to show a reliable result. This is due to the fact that pregnancy does not occur immediately after the intended conception, but only after 7-10 days.
That is why the probability of diagnosing pregnancy 2-3 days before the onset of menstruation is extremely small, since the hormone level increases only after the attachment of the ovum to the wall of the uterus.
False negative test result
False negative diagnostic result is a common phenomenon. It has several reasons. It is rarely associated with the quality of tests, most often the reason lies elsewhere.
A false-negative result can be obtained due to the fact that the diagnosis was made too early. The level of hCG did not reach a high concentration. In this case, a ghost strip often appears - a subtle second strip. This is the answer to another question asked by women - will the test show pregnancy before a delay?
In addition, the test may not show pregnancy, if poor biological material, diluted urine was used for the diagnosis. Due to the use of drugs by a woman or a large amount of water.
Why else the test does not show pregnancy? Getting a false result can also be associated with diseases, pathological processes observed in the future mother's body.
When renal pathologies test the presence of a hormone in the body. It should be borne in mind that if there is protein in the biological material of a woman, urine, the result can also be false negative.
One of the reasons is stale urine taken for diagnosis. Only fresh material should be taken. In extreme cases, urine should be stored in a cold place, but not more than 2 days.
More serious reasons for the indication of a false result are various pathologies of pregnancy, among which the most frequent are frozen, ectopic pregnancies, the threat of miscarriage or incorrect attachment of the ovum to the uterine wall.
Invalid result is associated with violation of the storage conditions of the test, with its shelf life. Expired test results cannot be trusted.
A woman should also be aware that in the case of an ectopic pregnancy, the test may show a positive result. This pregnancy will be interrupted by itself, at 7-8 weeks.
But it is better in the early stages to recognize the pathology and contact a specialist to take urgent measures. Otherwise, a woman is threatened with large blood loss and further health problems.
Getting the wrong result is possible if a woman had an abortion some time ago. In this case, the fetal egg is no longer there, but the level of the hormone has not yet decreased.
A false-negative result may be indicated due to the use of hormonal drugs by a woman. In this case, hCG may not be recognized.
It happens that the test shows not two strips, but one, and next to it is the so-called ghost strip.
How to do a pregnancy test to get the right result
Despite the fact that this method of diagnostics is incredibly simple and accessible, when carrying out it is necessary to consider some points and follow the instructions. Detailed step-by-step instructions are available on each package with dough, regardless of its type and price category. Most often, the instruction is accompanied by illustrations.
All tests are carried out according to the same principles: the interaction of the sensitive part with biological material.
The difference in the procedure depends on the type of test. If you use a strip test, it is worth remembering that you cannot immerse it deeper than a permissible trait, otherwise the test will become unusable. The result of such a test will not be reliable.
Conclusion
The test for the diagnosis of pregnancy is a great opportunity for the fair sex to detect pregnancy in the early stages without leaving your home. However, it is necessary to take into account a number of conditions and follow the instructions exactly to get a reliable result.
If you still have doubts about the correctness of the procedure, you should contact the clinic for re-diagnosis.
And in addition - the opinion of the doctor on the subject of the article.
