Pregnancy Test: Learn What Kind Appeal To Take Your Questions

Know what are the principal means used to detect a pregnancy before the appearance of the first signs or a suspicion

The delay menstruation in women with regular cycles, is the first sign of suspected pregnancy. But, it is worth noting, there are several noticeable clinical signs for the woman, as pain in breasts, darkening of the areola, bloating, drowsiness, mood changes, which allow the suspicion of pregnancy even before the absence of menstruation.

On the suspicion of pregnancy, arises a question: what kind of test I should apply to? In addition to the options of Pharmacy and tests of the blood test, some women start to wonder if the so-called homemade pregnancy tests also have certain effectiveness.

Types Of Pregnancy Test

There are two types of tests more known to detect a pregnancy: the pharmacy test, which is done with the urine, by his wife (at home), and the blood test, which is usually requested by the doctor and done in the laboratory.

There is also the possibility of betting on homemade tests before resorting to another type, but, it is worth mentioning, they present no proven efficacy. Below you can see the main information about the different types of tests:


Face to suspected of being pregnant, the trend of women’s run to the drugstore to buy a pregnancy test.

Donyea Fernandes Donadio, gynecologist, obstetrician, specialist in human reproduction and Technical Director of Cetipi (centre specialized in the Integral Treatment of Infertile Patients), stresses that the dispensary tests are sold without prescription and cost between $10 to $100. “The so-called tests assess the presence of Pharmacy hormone called hCG (human chorionic gonadotropin), produced by the placenta, in the urine of the woman”.

In pharmacies, you can find a huge variety of brands. And, depending on the brand, a test may be more sensitive than the other: the more sensitive can detect levels of 20 IU/l of hCG in the urine, while others detect from 50 IU/l.

However, unfortunately, the test is usually not specified sensitivity. In General, it is believed that the more sensitive tests are the most expensive, but it is not a rule.

Donyea Fernandes Donadio notes that certain recommendations should be followed for the use of these tests: observe the validity, integrity and, above all, the time of the menstrual delay. “Test early, even before the delay could lead to a false negative, because the concentration of the hormone in the urine is smaller compared to the concentration in the blood and, in addition, hCG levels go up slowly as the pregnancy develops, so, if performed too early, the concentration of the hormone is still so low that becomes undetectable for the pharmacy” explains the gynecologist and obstetrician.

It is recommended that, in General, wait at least 15 days after fertilization, i.e. after the sexual act, to do this kind of testing.

Reading the result is very simple: “after putting the strap in contact with urine and wait the time indicated by the manufacturer, the presence of two lines indicates a positive result, even if the second line is very pale,” says Yap’s doctor.

If the test comes back positive, pharmacy is virtually certain that the woman is pregnant. But, as the gynecologist Yap, exist, although extremely rare, “false positives”, which occur due to the production of this hormone in cases of ovarian tumors.


The blood test called beta-hCG detects as early pregnancy, even before the menstrual delay. In General, it is recommended to wait for 9 to 12 days after fertilization to accomplish it.

Donyea Fernandes Donadio explains that the β-hCG test can be qualitative or quantitative:

Qualitative: just say whether or not the presence of the hormone in the blood;

Quantitative: say how many units of the hormone was detected in the blood.

“The quantitative carrier test allows you to evaluate the normal development of pregnancy, that too at the beginning is still not visible on the ultrasound. The amount of hormone should double every two days. If that doesn’t occur, can indicate a pregnancy unfeasible, it will not evolve properly, studying with abortion or pregnancy in the fallopian tubes, ectopic call “, explains gynecologist and obstetrician.

Donyea Donadio notes that, mainly among women in fertility treatment, the request by the two medical tests of quantitative BhCG, with two days apart, is very common. “Because among patients with fertility problems the incidence of ectopic pregnancy is much larger,” he explains.

The price varies from place to place, but in many cities the β-hCG test costs between 25 to 35 reais.

Home Pregnancy Test

Suspecting that they might be pregnant, usually due to delay menstruation, some women still use the homemade pregnancy tests before they even buy a pharmacy test.

On the internet you can find a few recipes that promise to confirm or not the pregnancy. Here are some examples:

  1. Boil Urine Test

Boil urine in an aluminum container and then observe: If the urine boil similar to milk-it forms a kind of “cream”-, the result is positive. If the boil is similar to that of water – just bubbling, the result is negative.

  1. The Needle Test

Urinate into a container and put a needle inside it. Then, it is necessary to close the container and wait for 8 hours. If the needle change color, the result is positive.

  1. Test The Bleach

Urinate into a container and add bleach. If the urine change color or effervesce, the result is positive.Otherwise, the result is negative.

  1. Chlorine Test

Put urine in a disposable Cup and add chlorine. If she stays dark, the result is positive. If the mixture continue with the same color, the result is negative.

However, it is worth mentioning, none of these tests has scientific proof. Such homemade recipes can be more regarded as popular belief than as reliable tests. But the truth is that, in many cases, serve to diminish the anxiety.

The trick, then, is: If you decide to do a home test, regardless if it’s positive or negative, I don’t believe totally and only the result pointed to by it. The path is a choice, then by a pharmacy test and/or blood test as soon as possible.

Transvaginal Ultrasound To Detect Pregnancy

According to Yap, the best assessment of Donadio pregnancy, as well as your evolution is by transvaginal ultrasound.

“Usually, the image of pregnancy by ultrasound is visible from five weeks, that is, after a week of delay in women with regular cycles. Remember that gestational age is calculated from the date of the last menstruation, and not of the design; soon, five weeks of pregnancy represents a week’s delay, “highlights the doctor.

Sometimes, explains Donyea Donadio, the blood pregnancy test is positive, but I still don’t see the image of pregnancy on ultrasound. “It is mandatory to show the gestational sac from a BhCG to 700UI, if it is not visible, you must remove the possibility of ectopic pregnancy (pregnancy in the fallopian tubes),” he says.

“The ultrasound, with five weeks see the gestational sac, as a dark Speck and well inside the uterus, then a little later appears call vitellin vesicle and the embriãozinho itself and, with seven weeks, the presence of so-called fetal heartbeat is observed,” the gynecologist and obstetrician.

The price of the transvaginal ultrasound varies greatly from clinic to clinic. He is covered by a large number of health plans, however, it is important to check with the administration of your plan if this is your case. Having to pay for the exam, you can have an expenditure of 60 to 150 reais.

Pregnancy Tests By SUS: How To Get?

According to information from the Press Office of the Ministry of health, the provision of rapid test for SUS pregnancy is inserted in the Stork Networkstrategy, which consists of a network of care to ensure to women the right to reproductive planning, as well as humanized attention during pregnancy, childbirth and after the baby is born.

The pregnancy rapid tests are available in basic health units (UBS), scattered throughout the country, and work through the collection of urine. That way, the woman who needs this service, should inform one of UBS’s of your city on how to proceed to perform the test.

One of the advantages of the rapid test is that the result be presented shortly after the urine collection.

According to information from the Ministry of health, currently, the Stork Network is present in more than 5000 cities of all the States of the country.

Finally, it is worth mentioning that, regardless of the type of test chosen to detect pregnancy as soon as pregnancy is confirmed, the woman must get the fastest possible orientation and follow-up doctor for prenatal care.