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Pregnancy test

Knowing whether or not you are pregnant is a crucial question for many women. Pregnancy tests play a fundamental role in this context. These easy-to-use tests detect the presence of the hormone hCG, a reliable indicator of pregnancy. We want to provide you with a complete and in-depth overview of pregnancy tests, explaining how they work, how to perform them correctly and how to interpret their results.

We will explore the different types of test available, namely urine tests, commonly sold in pharmacies, and blood tests, carried out in laboratories. Each of these tests has its own specificities and levels of sensitivity, and understanding these differences is crucial to choosing the most appropriate method for each situation.

The timing of the test is another critical aspect. If the test is carried out too early, for example before your period is late or just after unprotected sex, the results may be wrong. It is therefore important to know the right time to carry out a test in order to obtain a reliable result.

As well as providing technical information on how pregnancy tests work, we will also discuss the emotional and psychological implications of waiting for and interpreting the results. What does a positive or negative result mean? How do you deal with the uncertainty and associated emotions?

Finally, we will offer practical advice and recommendations to ensure the reliability of the tests and to understand the steps to follow once the result has been obtained, whether positive or negative. This guide aims to enlighten and reassure, providing all the information you need to navigate the world of pregnancy tests with confidence and knowledge.

When should I take a pregnancy test?

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Pregnancy tests

Description of Pregnancy Test Types (Urine and Blood)

Pregnancy tests fall into two main categories: urine tests and blood tests. Urine tests, often called urine pregnancy tests or urine pregnancy tests, are the most common and the most accessible. They are sold in pharmacies and can be carried out at home. The principle is simple: to detect the presence of the hormone hCG in the urine. These tests generally come in the form of absorbent strips or sticks.

Pregnancy blood tests, on the other hand, are less common for home use and are carried out in a medical analysis laboratory. They require a blood sample to be taken and are considered to be more accurate. These tests can not only confirm a pregnancy but also quantify the hCG hormone, providing information about the age of the pregnancy.

Explanation of the hCG Hormone and its Role in Testing

The hormone hCG (Human Chorionic Gonadotropin) is at the heart of how pregnancy tests work. Secreted after fertilisation, when the embryo implants in the uterine wall, this hormone is often referred to as the pregnancy hormone. In early pregnancy, the level of hCG doubles approximately every 48 to 72 hours, making it a reliable indicator for confirming pregnancy.

Urine tests detect the presence of this hormone in the urine. The most sensitive tests can detect hCG levels as early as the first day of delayed menstruation, although many experts recommend waiting a few days for greater accuracy. Blood tests, on the other hand, can detect hCG even earlier, sometimes even before your period is late, and are able to measure the exact amount of the hormone, giving more detailed results.

Difference between urine and blood tests

The main difference between urine and blood tests lies in their method of detection and their sensitivity. Urine tests, although practical and easy to use, can sometimes give false negatives, especially if carried out too early. Blood tests, on the other hand, offer earlier and more accurate detection of pregnancy. This is particularly useful in situations where rapid confirmation is required, such as in the event of worrying symptoms or for medical reasons.

Blood tests can also help monitor the development of the pregnancy, particularly when there is a risk of complications, such as in the case of an ectopic pregnancy or suspected miscarriage. They are often used by healthcare professionals to confirm the results of a urine test or in the event of an ambiguous result.

To sum up, understanding pregnancy tests, whether urine or blood, is essential for any woman who is thought to be pregnant. Knowing how these tests work, as well as their limitations, helps to better interpret the results and make informed decisions about pregnancy.

Pregnancy tests

Step-by-step guide to pregnancy tests

Preparation: Read the instructions carefully before using the Plusbaby pregnancy test.

Sample collection : Use the urine directly under the jet, or collect it in a clean container first.

Application: Expose the absorbent tip to urine for at least 5 seconds.

Waiting: Replace the cap and wait 3 minutes to read the result.

Interpreting the results : Two lines indicate a positive result, one line indicates a negative result, and no result or a line in the test area without a control line requires a repeat test.

The importance of test timing

The Plusbaby pregnancy test is designed to be used as an early test. It can be taken up to three days before your expected period, offering an opportunity to detect pregnancy earlier than standard tests. However, it is important to note that the accuracy of the test increases as you get closer to your expected period. So, although the Plusbaby test can provide early results, for maximum reliability it is advisable to carry out the test on or after your expected period.

The Plusbaby pregnancy test pack contains three tests for a specific purpose. This approach allows one test to be taken up to three days before the expected date of menstruation, another on the expected day of menstruation, and the third when menstruation is late. This strategy increases the accuracy and reliability of results, taking into account potential variations in hCG levels at the start of pregnancy. As a result, users can monitor their pregnancy status with greater confidence and accuracy.

Pregnancy test Plusbaby

Common mistakes such as testing too early or misinterpreting results.

Testing Too Early: Using the test before the expected date of menstruation, even for an early test such as Plusbaby, can lead to false negative results, as the hCG may not be high enough to be detected.

Incorrect interpretation: Errors of interpretation often occur. For example, considering a very pale line in the test zone as a negative when in fact it indicates a positive. Or ignoring a faint line and perceiving it as a test defect.

Inappropriate use : Failure to follow the instructions, such as not immersing the absorbent tip correctly or for the recommended length of time, may distort the results.

Late Reading : Waiting too long to read the result (after 10 minutes) can lead to errors, as tests can develop evaporation lines which are sometimes misinterpreted as a test line.

Influence of Medicines : Certain drugs, particularly those containing hCG or diuretics, can influence results, leading to false positives or false negatives. For example:


  • Fertility Hormones hCG-based treatments used for fertility can give a false positive result, as they artificially increase the levels of hCG in the body.
  • Diuretics These drugs can dilute the urine, reducing detectable hCG levels and possibly leading to a false negative result.
  • Antipsychotics Some antipsychotics can alter pregnancy test results.
  • Anticonvulsants and Tranquilizers These drugs can also affect results.

Interpreting the results

Understand the meaning of a positive or negative result

Positive result : Indicates the presence of the hormone hCG, suggesting pregnancy. Even a faint line in the test zone should be considered positive.

Negative result : Absence of the hormone hCG, indicating that there is probably no pregnancy. However, it could also mean that the test was carried out too early.

False positives and false negatives: causes and how to avoid them

False positives : May occur as a result of medication containing hCG, a recent miscarriage or hormonal abnormalities.

False Negatives : This is often due to a test being carried out too early, urine being too dilute, or the date of the period being calculated incorrectly.

Importance of Test Recovery in Case of Doubt

If in doubt, especially with a negative result and the absence of a period, it is advisable to repeat the test a few days later. This is particularly important if the initial test was carried out before or shortly after the expected date of menstruation, as hCG levels may not be high enough to be detected in the early stages of pregnancy.

Ectopic pregnancy (EP)

It is essential to watch out for potential signs and symptoms of a ectopic pregnancy (GEU) if you have a positive pregnancy test result. Although a pregnancy test can confirm a pregnancy, it cannot indicate its precise location. Here are some tips for identifying a possible ectopic pregnancy:

Severe abdominal or pelvic pain: If you experience intense and persistent pain on one side of the abdomen or pelvis, this may be a sign of EP.

Abnormal bleeding Abnormal vaginal bleeding, lighter or heavier than your usual periods, may be a symptom of EP.

Dizziness or fainting If you experience dizziness, fainting or weakness, this may indicate an EP and should be reported immediately.

Shoulder pain Shoulder pain can be a sign of internal bleeding caused by an EP. If you feel this pain after a positive pregnancy test, consult a healthcare professional promptly.

General symptoms Common symptoms of EP include nausea, vomiting, diarrhoea, fatigue and abdominal cramps.

It is vital to consult a doctor immediately if you experience any of these symptoms after a positive pregnancy test. An EP is a medical emergency that requires immediate medical intervention to avoid serious complications. A doctor can use additional tests such as an ultrasound to determine whether the pregnancy is intrauterine or extrauterine and take the appropriate measures. Never ignore these symptoms and seek prompt medical attention if in doubt.

After the test: Next steps

What to do after a positive result

Once you've had a positive pregnancy test result, it's important to take certain steps:

Medical consultation : Schedule a medical consultation with your doctor or gynaecologist. They will confirm the pregnancy, assess your general health and discuss the prenatal care to follow.

Ultrasound : An ultrasound scan may be recommended to determine the exact location of the pregnancy and check whether it is intrauterine, which is the most common case.

Prenatal advice : Your doctor will give you advice on nutrition, taking prenatal vitamins and other measures to ensure a healthy pregnancy. It is essential to start taking prenatal vitamins as soon as your pregnancy is confirmed. These supplements are specially formulated to support you and your baby's health during this crucial time. They provide essential nutrients, including folic acid, iron and B vitamins, for the optimal development of the foetus and to maintain your well-being. Prenatal vitamins play a key role in preventing nutritional deficiencies and preparing your body for motherhood. It is therefore strongly recommended that you include them in your daily routine from the start of your pregnancy.

How to deal with a negative result and when to retest

If the pregnancy test is negative, here's what you can do:

Waiting: If you took the test early, wait a few days and take it again. hCG levels rise rapidly in early pregnancy, and a negative result may be due to an early test.

Symptom Monitoring : Continue to monitor pregnancy symptoms such as nausea, breast tenderness and lower abdominal pain. If these symptoms persist or intensify, consult a healthcare professional.

Monitoring pregnancy symptoms such as nausea and lower abdominal pain.

After a positive result or in the event of persistent symptoms, it is important to monitor your health. This includes:

Nausea and vomiting: If you suffer from severe nausea, talk to your doctor. They may recommend measures to relieve these symptoms.

Lower abdomen pain: Mild lower abdominal pain is normal during pregnancy, but report any severe discomfort to your doctor.

Bleeding : Any vaginal bleeding during pregnancy should be reported to your healthcare professional.

Fatigue : Fatigue is common during pregnancy, but if it becomes excessive, discuss it with your doctor.

A positive pregnancy test result requires a medical consultation for confirmation and prenatal advice. If the result is negative, wait a few days and monitor the symptoms. Maternal health must always be a priority during pregnancy, so don't hesitate to consult your healthcare professional if you have any concerns.

Technical and scientific aspects

The role of implantation, ovulation and fertilisation in the context of testing

In the context of pregnancy tests, the role of ovulation, fertilisation and implantation is essential. Ovulation marks the release of a mature egg from the ovary, ready for fertilisation. Fertilisation occurs when this egg meets a sperm cell, giving rise to a zygote. This zygote then divides to form an embryo that migrates to the uterus. Nidation is the process whereby the embryo implants itself in the uterine lining, triggering the production of the hormone hCG (human chorionic gonadotropin). It is this hormone that pregnancy tests detect, either in the urine or in the blood. The presence and level of hCG are therefore key indicators of the existence of a pregnancy.

What are the other pregnancy hormones besides hCG?

In addition to the hCG hormone, other hormones play a crucial role during pregnancy:

Estrogen : Estrogen is a group of steroid hormones which play a crucial role in the development and maintenance of female sexual characteristics and reproductive functions. It is produced mainly by the ovaries and, to a lesser extent, by the adrenal glands and placenta during pregnancy. Estrogens stimulate the development of the endometrium during the menstrual cycle and are involved in the regulation of various metabolic processes, the maintenance of bone density and the functioning of the cardiovascular system. It also prepares the mammary glands for breast-feeding.

Progesterone : Progesterone is an essential steroid hormone in the female reproductive cycle, particularly during pregnancy. Produced by the ovaries and, in larger quantities, by the placenta during pregnancy, progesterone prepares the endometrium for implantation of the embryo and maintains the pregnancy. It inhibits muscular contractions of the uterus, thus preventing rejection of the embryo, and plays a role in the development of the mammary glands in preparation for breast-feeding. Progesterone also regulates the menstrual cycle and affects mood and libido.

Relaxine : Relaxin is an important peptide hormone during pregnancy. Produced mainly by the placenta and ovaries, it plays a key role in preparing the body for childbirth. Relaxin relaxes the ligaments of the pelvis and softens and dilates the cervix. It also helps to inhibit premature uterine contractions. Relaxin also influences other body systems, such as the cardiovascular system, by increasing blood flow to the kidneys and reducing vascular resistance.

Each hormone plays a specific role in the development of pregnancy, in preparing the body for childbirth and in the general health of the mother and foetus.

Advice and recommendations

To help you choose the ideal pregnancy test, here are a few key tips:

Reliability and precision : Opt for a reliable and accurate pregnancy test, such as Plusbaby's, which offers an accuracy of over 99 %.

Early Detection Choose a test that can detect pregnancy early, such as Plusbaby's pregnancy test, which can be used up to three days before the expected date of menstruation.

Easy to use and read An easy-to-use, easy-to-read test like Plusbaby's pregnancy test, which provides clear instructions and easy-to-interpret results, is essential.

Discretion and confidentiality Plusbaby ensures discreet next-day delivery, respecting your privacy.


Pregnancy testsPlusbaby's pregnancy tests offer a reliable and practical solution for detecting pregnancy. With a thorough understanding of how the tests work, the importance of timing, and how to interpret the results, women can navigate the process with confidence. Key hormones such as hCG, estrogen and progesterone play vital roles in pregnancy, making these tests essential for early and accurate detection. Plusbaby stands out for its accuracy, ease of use and discreet delivery, offering the optimal choice for women looking for reliable answers.