Ovulation is the middle of a woman's menstrual cycle,during which the egg ripens and prepares for fertilization. The oocyte leaves the ovaries during this period and passes into the uterine tube, where fertilization takes place. When does the maturation occur and how can it determine the test for ovulation? These questions worry many women who are planning a pregnancy. Depending on the length of the menstrual cycle, ovulation may occur 10-16 days from the onset of menstruation. However, such a calculation is very approximate and is only suitable in cases where the cycle is stable and repeated after an equal time interval. The female body in this case works exactly like a clock. It is worth considering, when the rhythm of ovulation changes due to abortion, after giving birth, after 40 years of age, the determination of the "X" hour can become very problematic. Maturation of the ovum, which is ovulation, does not occur in healthy women during pregnancy and with full extinction of menstrual function in menopause. In the presence of certain diseases of the reproductive system, ovulation may be absent. To choose the most successful time for the commission of the act of conception of the child, it is advisable to find out the exact period of ovulation. When is the probability of pregnancy most high? Fertilization will be successful if the sperm of a man gets into the woman's body exactly at the time when the egg leaves the ovary cavity. It is worth considering that sperm can keep their activity for several days, so pregnancy can occur, even if unprotected sexual intercourse occurred shortly before ovulation. However, the chances of achieving pregnancy with the ejaculation of the male seed at the time of maturation of the egg are high. This period is determined in several ways: by calendar calculation, taking into account the day of beginning and end of the month, by measuring the basal temperature rectally, by means of tests for ovulation, according to subjective signs of the woman's well-being. Absence of ovulation becomes an insurmountable obstacle on the way to conception and requires medical treatment.

How does the ovulation test work?

Among other methods for determining maturationthe most practical and one of the most accurate is the use of a test to determine ovulation. On what is the action of these strips based? The fact is that during each menstrual cycle in the ovaries at least one follicle ripens, as a result of which the number of female hormones in the body increases - estrogens. As the follicle develops and increases, the amount of hormones increases. At the time when the level of estrogen reaches the level necessary for ovulation, another hormone, luteinizing (LH), is released into the woman's body. Within 24-48 hours from this moment, the process of ovulation occurs when the egg is released and rushes into the fallopian tube to meet the spermatozoa. The test reacts to the appearance of luteinizing hormone in the urine and reflects its presence. When is it worth using a test? It is worth to clarify that the time required for the development of the follicle, individually for different women. Accordingly, the test should be started from about the 11th day of the 1st day of the beginning of the last month. Usually the egg maturation phase lasts 12-16 days. Accordingly, if the cycle is on average 28 days, then you need to use the test strip for 11 days, and if the cycle length is 32 days, then apply from 15 days from the beginning of the month. If the cycle is unstable, it is worth taking for the calculation of ovulation the shortest period between menstruation in the last 6 months and starting testing as early as possible so as not to miss the coveted period. With periodic long delays and the irregularity of the onset of monthly monitoring of hormonal changes with the help of test strips, you must perform daily, starting from the 11th day of the cycle until you determine the presence of ovulation. If the ovulation test is applied daily, or even twice a day, over the estimated maturity of the egg, this method shows excellent results, especially when combined with ultrasound.

Types of tests for ovulation

For household use, there are no-test types of tests, which are represented by several varieties.

Test strips - an economical option, the mostpopular pregnancy test. It is a thin strip of paper material, impregnated with a special reagent, reacting to the presence of LH in the woman's urine. Despite the economy, test strips have a number of drawbacks. It is necessary to carry out the study very carefully, to immerse the test in urine for a certain depth for a long period of time from a few minutes to half an hour. At the slightest non-observance of the instruction, the result may be incorrect. The presence of ovulation is determined by the appearance of a second contrasting band on the test.

Tablet tests also look similar to the cassette onestests for pregnancy. It is a test strip enclosed in a plastic case with a window for observing the results. They are also used to determine the release of LH into urine. Tablets are more expensive than strips, but are much more effective: to determine the ovulation it is enough to moisten the test in the urine and within 5 minutes to evaluate the result.

Jet tests today are considered the most reliable and modern. To determine the presence of ovulation with an accuracy of 98% is easy: it is enough to moisten the test in the urine and after 1 minute the result will be reflected.

Electronic tests differ from others in thatTo determine the presence of chlorides in the body, a woman uses saliva. This method is the most accurate and has no competitors. The saliva is placed under the lens, and the result is estimated by the characteristic pattern on the saliva, which can be observed through a microscope or a special sensor. One of these devices and a detailed instruction on the characteristics of possible saliva patterns are contained in the kit with the lens. This type of tests is the most expensive and effective.

Reusable tests are a set with a set of simple test strips for each day.

It is worth noting that any test for ovulationdetermines the presence of LH in the body necessary to achieve ovulation, but in rare cases this does not become a guarantee of ovulation. This is possible if the woman has deviations in the health of the reproductive system. When buying a test, special attention should be given to the shelf life of the device, the quality of the packaging, storage conditions. On a quality certified product must be present stamp with the date of issue, as well as the batch number. Otherwise, there is a high probability of running into a counterfeit.

Application of the test

Experts recommend conducting testssystematically at a time when ovulation should occur. Research should be done daily, at the same time of day. It is considered optimal to apply tests twice a day - in the morning and in the evening. This is due to the fact that a period favorable for conception lasts only 24-48 hours: the sooner a woman learns about the approach of ovulation and performs a sexual act, the higher the probability of successful conception. To increase the effectiveness of the study, it is recommended to refrain from urinating for 4 hours before the test, and to limit fluid intake during this period. These measures are aimed at improving the LH concentration in urine and increasing the reliability of the study. If the test is applied once a day, it is advisable to use it in the morning, immediately after awakening. Evaluation of test results is made in comparison with the control line. Depending on the type of instrument used, it can be located in a special window or directly on a strip impregnated with a reagent. The control line is always displayed and does not serve as an indicator of ovulation, it is necessary to determine the intensity of hormonal release. So, if the second strip is paler than the control, then the hormone is present in the urine in an insufficient amount for the onset of ovulation. But if the second strip of the same color or darker than the control, then, the release of the hormone is carried out, and ovulation is about to come or is already happening. From this period, and you need to count the hours during which the probability of pregnancy during sexual intercourse is the highest.

Probability of errors

Unfortunately, there are cases when the test canto be mistaken. In some cases, it is not possible to determine the onset of ovulation reliably because of hormonal disorders, when the test shows a hormone release, but egg maturation does not occur for any physiological reasons. Raising the level of LH in the body is not an absolute guarantee of ovulation. Tests can show false results not only in the presence of diseases, but also with a sharp change in climate, stressful situations, a strict diet, the abolition of hormonal drugs. The presence of other hormones can also affect the test results. So, a pregnant girl can make a test and detect ovulation, which will result from an increase in estrogen in the body, as well as an increase in the level of hCG. Before you buy a test for determining ovulation, it is worthwhile to carefully study the principles of the action of this drug and choose a suitable variant. It is necessary to strictly follow the instructions, properly conduct the procedure and evaluate its results.

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