What pregnancy test is best and will accurately show conception?

Today every woman can use the method of express diagnostics of pregnancy with the help of special tests. But since in the pharmacy network such products are presented in a wide range, you need to know which test for pregnancy is better, because of its reliability and truthfulness of the evidence depends very much.

Today, a pregnancy test is the easiest, most affordable and fastest way to find out if a conception has occurred. But the result of express diagnostics sometimes turns out to be erroneous, and a lot of factors - from violations of technologies in the production of test strips and its misuse to hormonal imbalances in the body or the intake of certain medications - are the cause of this. However, the frequency of error and the risk of obtaining a false result can be reduced if the procedure is carried out according to all the rules, and also to know which test will accurately show the pregnancy if it exists.

Pregnancy test: how does it work?

The principle of any pregnancy test, regardless of its form and variety, is to determine the specific hormone - chorionic gonadotropin( hCG) in a woman's urine. What is this hCG and why does its presence in the urine indicate pregnancy? This term designate a specific hormone, which is produced by the envelope of the embryo - the chorion, the precursor of the placenta. Consequently, its appearance in the urine means that the process of conception has occurred and a new life develops in the woman's body.

But how do you know on what day of conception the test will show pregnancy and can you get a reliable result on the basis of the express method? It turns out that much depends on the sensitivity of the test. Often in the manufacture of most inexpensive test strips, cheap reagents are used that confirm the presence of pregnancy only at a high level of hCG( from 25 mIU / ml).Therefore, in the early stages, when the level of the hormone in the urine is still insignificant, the strips often give false results.

The best and most accurate pregnancy tests in the early stages, produced on the basis of modern reagents. Such chemical compounds are highly sensitive to hCG and allow detecting the presence of this hormone even at the minimum concentrations in the urine( from 10 mIU / ml).This guarantees the most reliable results of the pregnancy test.

When can I do a pregnancy test?

Many women are interested, on which day of delay express diagnostics will give a reliable result? Experts explain that, despite the fact that the chorionic gonadotropin begins to be produced immediately after conception, in the first days of pregnancy its concentration is so low that it is often impossible to determine HCG even by blood analysis.

Even the most expensive and sensitive test can determine a specific hormone only when its concentration reaches at least a minimum value of 10 mM / ml. But since each woman is individual, this hormone can not all be produced in a standard amount. In this case, even hypersensitive tests can show a false result. Here is the answer to the question: can a pregnancy test be mistaken?

To get the most accurate and reliable result, the test is recommended for 8 to 14 day delay. When using the express method, the rules specified in the instructions should be followed exactly. According to the rules of use, the test should be done in the morning, as the concentration of hCG during the day decreases and by the evening it becomes minimal. However, there are modern tests( for example, inkjet and electronic) that can be used at any time of the day.

Conventional tests are narrow strips, more expensive versions may have different shapes, for example an elongated body with a window, in which the results of a pregnancy test in the form of red strips appear. Before the procedure, do not drink a lot of fluids or take diuretics. The essence of the study is the short-term contact of the test with urine. To do this, the woman must collect urine in a jar and for a few seconds put the express device into it. The appearance on the test for pregnancy of the second strip is considered a positive result, indicating the onset of conception.

Specific hormone( hCG) appears in the urine after a fertilized egg is implanted into the uterine wall. However, it is not possible to determine exactly when the fertilization took place and the implantation of the fetal egg by any doctor, just like no one will say, after how many days to do a pregnancy test, in order to obtain a reliable result. This is a very individual moment, because the organism of every woman reacts differently to conception, which means that the concentration of hCG in urine can grow quite slowly. Therefore, if after the first test the second bar is weak, you just need to repeat the express diagnostics after 2-3 days and then the result will be more reliable.

Types of tests that determine pregnancy

All tests used in rapid diagnosis of pregnancy are divided into 4 types:

Strip tests or test strips

Designed for insertion into a container with urine. This is the most simple, inexpensive and popular method for women in determining pregnancy. The test looks like a paper strip with markings. It should be lowered into a jar with morning urine for 10 - 20 seconds, then removed and placed on a flat surface. After a certain time, indicated in the instructions, the result will appear on the strip. If another appears next to the control red strip, then conception has occurred.

However, the advantage of such tests is only in their availability and inexpensive price, as they often give a false result. The strip can be accidentally overexposed or underexposed, and the paper base often does not allow creating the necessary concentration of reagents, as a result, the test turns out to be incorrect. Another disadvantage is the inconvenience of use. A woman must first find a separate container for collecting urine and ensure its sterility, otherwise an insufficiently clean jar can also affect the test result. The cost of strips on the average is from 10 to 100 rubles, and their sensitivity is from 25 mMe / ml.

Tablet

The most modern and sensitive tests that allow you to determine pregnancy in the early stages and at the same time it is much more convenient than conventional strips. This test is a plastic tablet with windows on the body. In a set with it there is a pipette, which needs to be applied a few drops of urine to the tissue surface of a special window. Spreading over tissue impregnated with reagent, urine reacts with it and a red strip appears in the other window. Tablet tests are more accurate and perfect, not requiring immersion of the device in urine. However, in order to fill the pipette, you must first urinate in a sterile jar. The cost of tablet tests is from 50 to 180 rubles, and their sensitivity is higher - from 10 to 25 mIU / ml.

Inkjet Tester This is a miniature device that can be directly placed under a stream of urine. Such adaptations refer to the third generation of tests designed to determine pregnancy. They have a more complex device, and are particularly sensitive, allowing you to determine the pregnancy at the earliest stage. The basis of the analyzer is a fibrous material with tubules that quickly absorb urine. On these canals, the biological fluid rises to the test system, where there are special substances that react even to the minimal doses of the hormone HCG.

The analyzer itself is an oblong plastic casing, in the center of which there is a window for the result, and an elongated end, on which there are windows with fibrous material. Such tests are very convenient to use, they can be used in any conditions, since it is not necessary to be immersed in a container with urine, it is enough simply to substitute the elongated receiving tip of the device for a stream of biological fluid. A minute later the analyzer gives a reliable result, in the form of two strips in the window on its body. Such tests are very sensitive and react even to the minimum concentration of hCG, and the reliability of the result reaches 99%.The cost of devices - from 250 rubles, the sensitivity - from 10mE / ml.

Electronic( digital) tests

is a reusable analyzer. In fact, they represent the same inkjet test, only improved. The window where the result appears is covered with a transparent screen, and the device itself looks like a compact oblong plastic casing that resembles a marker in shape. Use this analyzer in the same way as an inkjet test, only in this case the result is reflected on the electronic display not in strips, but in the signs "+", "-" or in the signs( pregnant) or( not pregnant).This version of the tests is the most accurate, easy to use, but also the most expensive. The average cost of digital analyzers is from 300 to 900 rubles.

Best tests

Clearblue Digital

One of the best digital tests for determining pregnancy. It is a compact analyzer that looks like a marker for drawing. On the surface of the plastic housing there is an indicator window in which the result of the investigation appears. This device allows you to determine the presence of pregnancy, even at the earliest date with a confidence of 99%.The working part of the device is an elongated tip, inside which is an absorbent fiber impregnated with special reagents. The tip is closed with a protective cap. On the body of the device is built-in display, which is a few seconds after contact with the biological fluid displays the results. The electronic device is intended for reusable use.

Before using the test, you should carefully read the instructions and only then start to examine the urine. It is carried out in several stages:

• the analyzer is first taken out of the package, the blue cap is removed from the tip;
• substitute the absorbent tip under a stream of urine and hold for at least 5 seconds, pointing it down;
• after contact with the urine, an hourglass image should appear on the instrument display indicating that the level of the hormone hCG is being determined;
• all this time the device needs to be kept tipped downwards or put it on a flat horizontal surface;
• for 3 minutes the display will show the result, if it is positive, then later in the window even the gestation period will be highlighted.

Advantage of the device - ease of use, reliability, accuracy and reliability of the result, the ability to determine the duration of pregnancy, even at an early stage. The price of the electronic device is from 250 rubles.

Evitest

is a quality test, Germanic, which is highly sensitive and gives 100% reliable results from the first day of the delay of the monthly. Evitest is available in different versions - in the form of strip strips, inkjet and flatbed dough. Strip - test consists of two strips, which to get the result is lowered into the urine. Tablet tests are completed with a pipette, which is convenient to apply drops of biological fluid to the window with reagents. The ink test guarantees hygiene, convenience and ease of use. All the nuances of use for each species are detailed in the instructions for the tests. The popularity of Evitest is determined by their quality, democratic price, reliability of the result and ease of use. The price of tests is from 50 to 150 rubles.

FRAUTEST( Frautest)

is another series of quality tests from Germany. There are several varieties of tests of this brand, which differ in form, production technology and cost.

FRAUTEST Express

The simplest version is a strip strip on a substrate. It needs to be lowered for a few seconds in a jar with urine in order to obtain a result in 1 minute - 1 or 2 strips.

Double control

It differs from the first option only in that it contains an additional strip, which makes it possible to conduct a control test in a few days, if for the first time the result turned out to be doubtful.

FRAUTEST Comfort

is an improved, inkjet version, which is a test cassette, inside which is a strip of reagent. The protruding tip is covered with a cap. On the other side of the case there is a window. Before the procedure, the cap from the protruding tip is removed, placed under a stream of urine for a few seconds, and then returned to the place. The cassette is placed on a horizontal surface and after 3-4 minutes the result is obtained, in the form of strips in the window of the casing. The cost of this brand - from 20 to 100 rubles, depending on the type of test.

Premium Diagnostics is a very convenient and reliable inkjet test, with an accuracy of up to 99%.Is able to determine pregnancy at the earliest possible time. Advantage is convenience of application - the test can be used at home or in less comfortable conditions. Every woman who needs a quick and accurate result is advised to purchase this analyzer. The cost of the test is from 280 rubles.

Among the foreign brands, the rating is led by the following tests:

• Clear Blue;
• Frautest;
• BonaDea;
• Evitest;
• Mon Ami.

However, the probability that the use of the express method will give a false result, still exists. And often such a result does not depend on the quality of the test, since many factors can influence the final result.

Can a pregnancy test fail?

Even if you choose the most popular and expensive pregnancy test, the probability of a false positive result still exists. What causes affect the reliability of the study? We list the main of them:

• improper use or storage of the test;
• poor-quality product( production marriage);
• reception of hormonal preparations( in particular, intended for the treatment of infertility);
• presence in the anamnesis of miscarriages, abortions, ectopic pregnancy;
• cysts or malignant tumors that produce hCG.

Very often a weak band appears on the test, which makes one doubt the reliability of the result and do a second test in a few days. The reasons for this uncertain outcome are the same as those listed above. Sometimes a weak strip appears if the test is poor-quality, overdue or the conditions of its storage are violated.

Sometimes a false pregnancy result may be false. The cause of this are the following pathological conditions:

• chronic kidney disease, cardiovascular system;
• ectopic pregnancy;
• threat of miscarriage;
• a frozen pregnancy.

Less dangerous situations accompanying a false negative test are the intake of diuretic or hormonal drugs, too short a period after conception or the use of a substandard test. If you doubt the results of the express method, you should consult a gynecologist, take a blood test for HCG, and undergo ultrasound. This approach will provide an accurate result and take timely measures in the development of dangerous conditions( ectopic or frozen pregnancy).

Reviews

After the birth of her son, she came to her senses for a long time, the birth was difficult, with complications. Therefore, there was a panic fear of re-pregnancy. My husband was protected, but the worm of doubt still sharpened. If there was a delay in menstruation, I got panic. Immediately ran to the pharmacy for a strip strip. But cheap tests could give an unreliable result, so I bought a reusable electronic test from Clearblue Digital. It looks like a marker for drawing. It is very convenient to use them, you do not need to collect urine in the jar beforehand. Only 3 minutes and the result is ready, the result is displayed in the window on the case. I completely trust this test, I have never failed.

Xenia, Yekaterinburg

I often use tests to determine pregnancy. My husband and I have long dreamed of a child, but we can not get pregnant in any way. If there is a delay, I immediately buy tests at the pharmacy in the hope of a miracle. But so far, I have never seen two cherished stripes. I always take tests of a certain brand - Evitest. Used to buy strips - this is the cheapest option. But they say, they often give an unreliable result. So now I'm buying a tablet test. It is more convenient to use and more accurate. When it is used in a special window, you need to drop a little urine with a pipette and after a few minutes the device will show the result. For me, this is the best option for both price and quality.

Alisa, St. Petersburg