dizziness, nausea, fainting - on such circumstantial evidence determined the pregnancy even our great-grandmother.Modern medicine offers women a more reliable methods for early diagnosis of pregnancy.Despite this, for some popular techniques women use today.
still popular pregnancy test with iodine, when the urine soaked paper applied a few drops of the substance and look at the color change.If it is not changed or become blue, then there is no pregnancy, and if the sample acquired a magenta tone, the woman is pregnant.Today it is easy to buy a rapid pregnancy test - a modern means of giving a guarantee correct results in 95-99% of cases.
How are pregnancy tests
After visiting the pharmacy, which sells a huge number of different Pibor, a woman raises the question: "What is a pregnancy test better?" First, let's see how they work.
Anyone (even Chinese) has its basis in response to the presence in the urine of pregnant women, the hormone hCG (human chorionic gonadotropin).It begins to be generate
hCG concentration sufficient to define tests, achieved the first day of the expected start of menstruation.In this period, you can use a pregnancy test: Evitest, Frautetst, Clesrblue and others.Although the latest generation of the model will show the correct result even before the delay.
most popular is low and a test strip impregnated with a reagent.Typically, the sensitivity is 25 MIU.Although these strips is easy to use, the inconvenience consists in the fact that the need to collect urine in a container and then dipping it there, the said side.Usually, a strip a few seconds to keep the liquid and then placed on a flat surface.
This condition is very important to observe that the reagents do not trickled down, and evenly distributed over the surface.After 3-5 minutes the result can be interpreted: two strips were painted in red or pink - pregnancy is;one strip of color - no pregnancy.A positive test is considered, where there is even a pale second strip.The analysis is best done by collecting morning urine, because the concentration of hCG in it the maximum.
Tablet pregnancy test
Tablet pregnancy test is more convenient analogue of the previous, only here with the reagent strip is placed in a convenient container - cassette.This option is also called a cassette.For him, just a few drops of urine, which is using a pipette is placed in a special window.
After 3-5 minutes the result is already visible in the other hole of the cassette.Tablet Test design allows a fairly accurate diagnosis.Its cost is slightly higher than the test strip.
most reliable instrument to determine pregnancy used at home - it is an inkjet.It has a high sensitivity of 10 mIU.
Ink tests are extremely simple to use: just substitute under a stream of urine.By special channels, it enters into the test piece, wherein the latex particles are attached to the reagent hCG and make it visible to the test hole.Due to hygienic design in sensitivity can be used anywhere and at any time, not just in the morning.Ink tests offer different manufacturers and in different price category, but of course they are more expensive than the two previous types.
In electronic test result is displayed on the LCD screen, but the working principle is the same - the detection of hCG in the urine of pregnant women.This new kind of nedёshev, but it is convenient to use, and the result is immediately clear.The monitor displays the inscription on the presence or absence of pregnancy.You no longer need to examine stripes and guess means it or just imagining.
Once gets urine on the test, a clock icon appears on its screen, as on the computer.After 3 minutes, there is a plus or minus sign, or the inscription «pregnant» - pregnant, or «not pregnant» - is not pregnant.Electronic test can be used to delay, but the results will be less accurate:
- For 4 days before the expected onset of menstruation probability - 51%;
- 3 days - 82%;
- For 2 days - 90%;
- 1 day - 95%.
Which device pregnancy is better - you decide, depending on their preferences and budget.However, remember that the most reliable - the definition of hCG in the blood in the laboratory.