Pregnancy Tests Demystified: How They Work and When to Take Them




Here’s a table with different types of pregnancy tests, the recommended lab for each test, and their estimated costs:


Serial Number Test Type Best Lab Name Cost (Approx.)
1 Urine Home Test Any pharmacy $5 – $15
2 Blood Test Any clinic $50 – $200
3 Urine Clinic Test Any clinic $20 – $100
4 Ultrasound Scan Medical imaging center $100 – $500
5 Urine Digital Test Any pharmacy $10 – $20
6 Saliva Test Online services $30 – $100

We will explain each type of pregnancy tests  one by one in detail.

Urine Home Test

The “Urine Home Test” is a popular and practical way to find out if you’re pregnant in the comfort of your own home. It is based on the finding of the pregnancy hormone human chorionic gonadotropin (hCG) in the urine. In order to measure the levels of hCG, the test usually uses a test strip or a midstream urine collection.

  • Best Time & Purpose for the Test

A week or so after missing a period is typically the best time to perform a urine home pregnancy test. Waiting until after the missed period improves the test’s accuracy since it gives the hCG levels enough time to rise to detectable levels. However, certain sensitive tests could assert that they deliver accurate answers a few days ahead of schedule, however their dependability may vary.

Finding out if a woman is pregnant or not is the main goal of a urine at-home pregnancy test. It is a quick and confidential way for people to learn whether they are pregnant without going to a medical facility. The majority of pharmacies and drugstores offer these tests easily and without a prescription.

While urine home pregnancy tests are typically reliable, it’s crucial to remember that they’re not perfect. If the test is performed too soon or the urine is overly diluted, false negative results may result. If there is any doubt, it is always best to follow up with a medical practitioner or to confirm the findings with a blood test, which can yield more conclusive results.

Blood Test

A blood test for pregnancy is a medical examination that gauges a woman’s blood’s concentration of the hormone human chorionic gonadotropin (hCG). Shortly after fertilization, the placenta produces this hormone, and its presence denotes pregnancy. Blood tests can provide quantitative information on hCG levels, which may be useful in some circumstances. Blood tests are thought to be extremely accurate and trustworthy for detecting pregnancy.

Two different kinds of blood pregnancy tests are available

  1. The qualitative hCG test determines whether or not pregnancy has taken place by confirming the presence of hCG in the blood. It offers a straightforward “yes” or “no” response.
  2. The quantitative hCG test determines the precise concentration of hCG in the body. It offers a precise hCG level, which is useful for tracking a pregnancy’s development or spotting potential problems like ectopic pregnancies or miscarriages.
  • Best Time & Purpose for the Test

Blood tests, as opposed to urine home pregnancy tests, can identify pregnancy sooner, sometimes as early as 7 to 12 days after conception. This makes them useful for early diagnosis because they can be used even before a missed period. However, it is frequently advised to hold off until after a missed period for the most accurate results because the test’s accuracy increases as hCG levels rise.
An accurate confirmation or exclusion of pregnancy is the main goal of a blood pregnancy test. When a woman has irregular periods, a history of infertility problems, or is undergoing fertility treatments like in-vitro fertilization (IVF), it is very helpful.

Furthermore, blood tests can be useful in monitoring the advancement of early pregnancies, especially in high-risk pregnancies or those with a history of problems. A series of tests over a few days can show whether hCG levels are rising appropriately, which is a positive indicator in early pregnancy.

Urine Clinic Test

The “Urine Clinic Test” is a type of pregnancy test that is performed at a medical clinic or hospital. It detects the presence of human chorionic gonadotropin (hCG), a hormone generated during pregnancy, in the urine in a manner similar to a urine home pregnancy test. The significant difference is that the urine clinic test is performed in a controlled clinical environment by healthcare professionals.

  • Best Time & Purpose for the Test

The ideal time to have a pee clinic pregnancy test is the same as the best time to have a urine home test. For greater accuracy, it is normally recommended to take the test one week after missing a period. However, in rare situations, the test can be performed before a missing period because hCG levels may be detected sooner in a clinical setting.

Consult with a healthcare practitioner to identify the best timing for the test based on individual circumstances, such as irregular menstrual cycles or other medical concerns.

The primary goal of a urine clinic test is to confirm or rule out pregnancy. When compared to home testing, healthcare providers employ this test to provide a more trustworthy assessment of a woman’s pregnancy status. The test is especially useful when a woman’s home test results were equivocal or she requires a formal pregnancy confirmation as part of medical care, family planning, or prenatal care.

Urine clinic tests are especially beneficial in circumstances where early detection is critical, such as in women with certain medical issues or when drugs or treatments must be modified to ensure the pregnancy’s safety.

Ultrasound Scan

An ultrasonic scan, also known as ultrasonography, is a medical imaging procedure that employs high-frequency sound waves to provide real-time images of the body’s internal components. An ultrasound scan is routinely used during pregnancy to visualize the developing fetus and the mother’s reproductive organs. It is a non-invasive and safe treatment that delivers significant information to healthcare providers and expectant parents while also serving as an important tool in prenatal care.

  • Best Time & Purpose for the Test

There are different types of ultrasound scans that may be performed during various stages of pregnancy:

  1. Transvaginal Ultrasound: This is often done in the early stages of pregnancy (around 6-10 weeks) to provide a clearer view of the uterus and confirm the presence of a viable pregnancy.
  2. Standard Ultrasound: This is the most common type and is typically performed between 18 to 22 weeks of pregnancy. It provides a detailed assessment of the fetus’s anatomy and is useful in detecting any developmental abnormalities.
  3. 3D/4D Ultrasound: These scans offer more detailed three-dimensional images and may be done during the second and third trimesters to provide a more realistic view of the baby’s features and movements.
  4. Growth Scan: This may be conducted in the later stages of pregnancy to monitor the baby’s growth and well-being.

The primary purpose of an ultrasound scan during pregnancy is to monitor the growth and development of the fetus. It allows healthcare providers to:

  1. Confirm Pregnancy: An early ultrasound scan can verify the presence of a pregnancy, determine the gestational age, and estimate the due date.
  2. Check Fetal Health: The scan can assess the overall health and well-being of the fetus, including checking for any potential abnormalities or birth defects.
  3. Determine Placental Location: The scan helps identify the position of the placenta, which is crucial for planning the delivery and assessing potential risks during pregnancy.
  4. Evaluate Amniotic Fluid Levels: It allows the measurement of the amniotic fluid volume, which is essential for the fetus’s growth and development.
  5. Assess Fetal Position: In later stages of pregnancy, the scan can determine the baby’s position and presentation, which helps in planning for delivery.
  6. Multiple Gestations: For pregnancies with multiple fetuses (twins, triplets, etc.), ultrasound scans are used to monitor each baby’s growth and position.

Urine Digital Test

The “Urine Digital Test” is a sort of at-home pregnancy test that uses digital technology to deliver a clear result. It detects the presence of human chorionic gonadotropin (hCG), a hormone generated during pregnancy, in the urine, just like traditional urine home pregnancy tests. The digital test, on the other hand, facilitates interpretation of findings by providing a clear “pregnant” or “not pregnant” indication on a computer screen.

  • Best Time & Purpose for the Test

A urine digital pregnancy test is normally recommended one week following a missed period. Waiting until after a missed period improves test accuracy by allowing ample time for hCG levels to rise to detectable levels. Some computerized tests claim to deliver reliable findings a few days ahead of schedule, but their dependability varies.

The major goal of the pee digital test is to provide consumers with a quick and easy way to assess their pregnancy status in the privacy of their own home. The digital format eliminates the requirement for traditional line-based results, which can be misleading or ambiguous at times.

The digital exam is especially useful for those who desire a clear, simple result with no room for interpretation. On the digital display, it displays an easy-to-understand “pregnant” or “not pregnant” message, leaving no possibility for interpretation errors.

Furthermore, individuals who find it difficult to read traditional line-based assessments due to visual impairments or language barriers may prefer the digital test.

While pee digital tests are generally accurate, like with all home pregnancy tests, there is a risk of false negatives if the test is administered too early or the urine is too diluted. If there is any doubt or want for confirmation, it is best to visit a healthcare practitioner or proceed with another test or a blood test.

Saliva Test


The “Saliva Test” is a non-invasive pregnancy detection tool that evaluates particular hormones found in a woman’s saliva. Unlike urine and blood tests, which look for hCG levels, the saliva test looks for estrogen and its metabolites. The test is frequently carried out with the aid of a test kit, which allows the woman to collect her saliva and submit it to a laboratory for analysis.

  • Best Time & Purpose for the Test

A saliva pregnancy test is usually taken a few days after a missed period. The accuracy of the test may vary based on the brand and technology utilized, thus it is critical to carefully follow the manufacturer’s directions.

The primary purpose of the saliva pregnancy test is to detect the hormonal changes that occur during pregnancy. During pregnancy, estrogen levels tend to increase, and these changes can be detected in saliva. The test is considered non-invasive, painless, and simple to use.

Some potential advantages of saliva tests over traditional urine or blood tests include:

  1. Early Detection: Some saliva tests claim to offer early detection of pregnancy, even before a missed period, although their accuracy at this stage may not be as reliable as urine or blood tests.
  2. Reusable Kits: Some saliva test kits can be reused, making them a more environmentally friendly option compared to single-use urine or blood tests.
  3. No Need for Special Collection Conditions: Unlike urine tests that may require first-morning urine or blood tests that require venipuncture, saliva tests can be performed at any time of the day without specific collection conditions.

However, it is essential to note that saliva tests may not be as widely used or as widely recognized as urine and blood tests for pregnancy detection. Their accuracy and reliability may also vary among different brands and testing methods.


While saliva tests provide an alternative means for detecting pregnancy, they may not be as accurate or commonly accepted as older methods. As a result, if there is any doubt about the results or if official confirmation is required, it is best to consult with a healthcare expert and pursue more proven pregnancy testing alternatives.

When taking pregnancy tests, it is critical to consider the following factors, as recommended by gynecologists in the United States:

Timing: Select the best time to take the test. For more accurate pee home tests, it’s usually advisable to wait until after a missed period. However, some tests may claim to enable early detection, so read the instructions carefully.

  1. Test Reliability: To get dependable results, use a renowned and FDA-approved pregnancy test kit.
  2. Read and follow the directions given with the pregnancy test kit carefully to ensure proper usage and accurate interpretation of the results.
  3. Test Sensitivity: The sensitivity of various tests to detect hCG may vary. Choose a test that is appropriate for your needs, particularly if you are testing early or have irregular menstrual cycles.
  4. To maintain the usefulness of the test kit, ensure that it is properly stored and has not expired.

Remember, while home pregnancy tests are generally accurate, they are not infallible. Consulting a gynecologist or healthcare professional is crucial for confirmation and further guidance, especially if you are planning a pregnancy or have specific medical concerns.

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