How Are Pregnancy Tests Made

Wine Homemade Pregnancy Test

How do pregnancy tests work? – Tien Nguyen

A homemade pregnancy test that has some degree of accuracy is using wine.

According to researchers from the National Institute of Health, using wine as a DIY test for pregnancy can have some success. It was found that proteins present in the urine of pregnant women react with the wine and change its color.1

How to do it:

For the DIY pregnancy test using wine, you will need some white wine. This is what you should do:

  • Pour 1/2 cup of white wine in a bowl.
  • Add 1/2 of urine from a sample collected first thing in the morning.
  • Leave the pregnancy test for 10 minutes.
  • See if there are any changes to the color of the mixture which will indicate if you are pregnant.
  • Taking A Pregnancy Test

    A pregnancy test is done using blood or urine samples.

    • A blood test is done by drawing a tube of blood from a vein in your arm. This takes place in the doctors office, and the sample is sent to the laboratory.
    • A urine test is done by urinating into a cup and then placing a drop of urine on a prepared chemical strip. This can be done in a doctors office or at home using an at-home test kit.

    The Surprising Secret Hidden In A Pregnancy Test

    A teardown of a digital pregnancy test has created a buzz after revealing it contained a standard paper test, similar to those used by GPs.

    The experiment has raised questions about whether the extra cost of digital pregnancy tests is justified.

    Some say the electronics give women a clearer answer but others point to the e-waste created by digital test kits.

    The experiment also found the digital test contained a microprocessor more powerful than early home computers.

    But the electronics themselves did not play a role in the hormone detection.

    Hardware researcher Foone decided to find out what was inside a pregnancy test in response to a tweet from a man questioning whether the digital pregnancy test his wife had bought was worth the extra money.

    Digital pregnancy tests that display the words “pregnant” or “not pregnant” on a screen often cost about four times as much as ones that simply provide a single or double line on a paper strip to indicate pregnancy.

    For the experiment, Foone used a Walmart Equate digital pregnancy test. The inner workings are similar to those in other brands including Procter and Gamble’s Clear Blue and the Boots own-brand digital pregnancy test.

    Foone was surprised to find the testing element inside was basically a standard paper test.

    Paper test strips detect a hormone called human chorionic gonadotropin, which is produced during pregnancy. The test strip is treated with a chemical that changes colour when the hormone is present.

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    How To Use A Home Pregnancy Test

    Meredith Shur, MD, FACOG, is board-certified in obstetrics and gynecology, as well as a certified medical examiner.

    Home pregnancy tests can be used to easily determine whether or not you may be pregnant, all from the comfort of your home. Typically, people who use home pregnancy tests are either trying to get pregnant and have missed their period or they don’t want to be pregnant and worry that their birth control didn’t work. In either case, these tests can quickly let you know if you’ve conceived or not.

    All you need to do is simply pee on the test stick and wait several minutes for your results. However, while home pregnancy tests are pretty simple to use, it’s very important that you carefully read the test directions. Accuracy depends on you correctly following the directions, including the timing of when to take the test and how to interpret the results. Learn more about how to use a home pregnancy test.

    When To Use A Test

    Cheap Homemade Pregnancy Test That Is Super Accurate

    A good rule of thumb is to wait at about 21 days after you last had unprotected sex/birth control failure before using a home pregnancy testor at least one day after a missed period. On average, 20mIU/hCG levels are present about seven to ten days past ovulation. During a typical cycle:

    • Most people ovulate 14 or 15 days from the first day of their menstrual cycle.
    • If the egg is not fertilized, then the next period should begin about 14 days after ovulation these two 14-day spans make up a 28-day cycle.
    • If the egg is fertilized, implantation generally happens at around 9 days days after ovulation.
    • Once implantation takes place, hCG will begin to be made .

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    How Does A Home Pregnancy Test Work

    Leyla Bilali, RN is a registered nurse, fertility nurse, and fertility consultant in the New York City area. She works in house at a reputable private clinic in New York City while also seeing her own clients through her concierge fertility consulting and nursing services business.

    It’s been a few months since you started trying to conceive and this time around, your period is already a day late. It’s not unheard of for your cycle to be off by a few days, so you’re not sure if this could be a pregnancy. You decide to take a home pregnancy test to find out.

    As you take one of the tests out of its wrapping, you start to wonder how in the world peeing on this stick can possibly tell if you are pregnant. It’s a fair questionand one with a scientific answer. In general, home pregnancy tests operate by detecting the presence of a hormone that is only produced after a fertilized egg implants in your uterus.

    This functionality can limit home pregnancy tests in terms of accuracy and timing. Your body only produces this hormone at a very specific time, so it’s possible for a home pregnancy test to miss the mark and give you a negative result when you do actually have a baby on the way. Understanding how these tests work can help you better use them to determine if you’re pregnant.

    How The Test Is Performed

    A pregnancy test is done using blood or urine. There are 2 types of blood tests:

    • Qualitative, which measures whether the HCG hormone is present
    • Quantitative, which measures how much HCG is present

    The blood test is done by drawing a single tube of blood and sending it to a laboratory. You may wait anywhere from a few hours to more than a day to get the results.

    The urine HCG test is most often performed by placing a drop of urine on a prepared chemical strip. It takes 1 to 2 minutes for a result.

    For the urine test, you urinate into a cup.

    For the blood test, the health care provider uses a needle and syringe to draw blood from your vein into a tube. Any discomfort you might feel from the blood draw will only last a few seconds.

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    How Does A Pregnancy Test Work

    One of the most commonly used medical diagnostics tests is the pregnancy test. Despite looking quite simple, the pregnancy test is actually extensively engineered. Everything from the outer plastic casing through to the paper strip and antibodies present in these have been engineered, either mechanically or chemically, in some way.

    How Is Cvs Performed

    Pregnancy test

    CVS may be offered to women with an increased risk of chromosomal abnormalities or who have a family history of a genetic defect that is testable from the placental tissue. CVS is usually performed between the 10th and 13th week of pregnancy. Although exact methods may vary, the procedure involves the following steps:

    • Using ultrasound technology, your doctor will guide the catheter into place near the placenta.

    • Your doctor will remove some tissue using a syringe on the other end of the catheter.

    Your doctor may also choose to perform a transabdominal CVS, which involves inserting a needle through your abdomen and into your uterus to sample the placental cells. You may feel some cramping during and after either type of CVS procedure. The tissue samples are sent to a genetic lab for growth and analysis. Results are usually available in about 10 days to two weeks, depending on the lab.

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    Dandelion Leaves Pregnancy Test

    Who knew that the nature in your backyard could help you determine if youre growing a human inside of you or not?

    • Collect two to three dandelion leaves and place them in a clean container.
    • Urinate in a separate clean cup.
    • Pour some of your urine over the dandelion leaves enough to soak the leaves.
    • Wait ten minutes.
    • Negative Result: no red spots or blisters appear on the leaves.

    Positive Result: red spots or red blisters appear on the surface of the leaves.

    Accurate Ways To Test For Pregnancy At Home

    One of the most accurate ways to test for pregnancy at home is to buy a home pregnancy testing kit. According to Dr. Sarah Marshal from Healthwise, home pregnancy tests can accurately diagnose pregnancy. These home pregnancy tests check for the presence of hCG in the urine and are the same type of test as are done in doctors offices.3

    If you are pregnant, you will usually see 2 lines appear on the test strip. Even if the second line is very faint, it still means that you are pregnant.

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    What If Its Positive

    You will probably experience an overload of mixed feelings once you see that positive result. You may be overjoyed especially if youve been trying for a long time. You might be feeling frightened, scared, or even disappointed. All these feelings are totally normal, and its common to experience several or all of them at once.

    Talk to someone about how youre feeling your partner, a friend, a parent, or your doctor. It helps to have someone to share your experience with.

    Here are nine more things you should do once you find out youre pregnant:

  • Write down the first day of your last period to help calculate your due date.
  • Start documenting your pregnancy in a journal, preparing yourself for pregnancy, and be sure to take lots of belly pictures.
  • Assembly Packaging And Shipment

    The first home pregnancy test kits with test tubes (1978
    • 3 The individual pieces are transferred to an assembly line where the immunoassay strips are first inserted into the housing along with the absorbent pad. The clear plastic window is affixed with adhesive to the upper half and the two portions are snap-fitted together. Finally, the cap is locked into place.
    • 4 The assembled test kit is packed in a foil/plastic laminate pouch along with a small sachet containing a silica gel desiccant. The desiccant absorbs excess moisture in the package and helps prolong the shelf life of the test kit. The pouch is then crimped tightly shut to minimize exposure to air. The filled pouch and a detailed instruction booklet are inserted in a cardboard box. One or two complete test kits are packed per box depending on the price and manufacturer. The filled box proceeds down the assembly line where an online ink jet printer is used to encode each box with critical information, such as the date the product was made, the expiration date, and the lot number. The box travels further down the assembly line where it is shrink wrapped for added protection. The finished box is then packed in a case for shipping.

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    How To Check Pregnancy At Home

    A visit to a gynaecologist is the most reliable way of checking for pregnancy. You can also use a DIY pregnancy test, though its not very reliable.

    Most DIY pregnancy tests analyse the urine, so make sure you collect the urine as soon as you wake up in the morning. Drink plenty of water and wait till your bladder feels full before collecting.

    Note that the sample should be sufficient to perform the test a second time.

    Pregnancy Test Routine Serum And Qualitativeurine


    Note: Norms are greatly dependent on test method used.

    SI Units
    Values double about every 2 days
    10 weeks of gestation


    Breast cancer, bronchogenic carcinoma, choriocarcinoma, embryonal carcinoma, gastric carcinoma, hepatocarcinoma, hydatidiform mole, in vitro maturation day 12-13 , malignant melanoma, multiple myeloma, pancreatic cancer, pregnancy, seminoma, teratoma, and trophoblastic tumor.

    Abortion and ectopic pregnancy.


    Human chorionic gonadotropin is a hormone uniquely secreted by the placenta of a fertilized ovum implanted in the uterine wall. hCG production begins 8-10 days after conception or during days 21-23 of the cycle. It reaches peak concentration at 8-12 weeks of gestation and then gradually decreases until returning to normal within 3-4 days after normal full-term delivery. This test can be most accurately performed from 2 days to 3 weeks after missed menses.

    Serum testing is performed by incubation of serum with anti-human chorionic gonadotropin . If hCG is present in the sample, it combines with the anti-hCG antibodies and inactivates them. When these inactivated antibodies are exposed to the indicator, which is red or latex cells coated with hCG, clumping of the cells does not occur, resulting in a positive pregnancy test. If clumping does occur, the test is negative.

    Professional Considerations

    Sarah Tiplady, in, 2013

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    How To Make A Homemade Pregnancy Test

    Here are seven pregnancy tests you can make at home with instructions for taking them and interpreting the results.

    Remember, none of these tests have been proven scientifically. The only reliable ways to confirm pregnancy are through store-bought pregnancy tests or a visit to your doctor.

    For best results, use your first-morning urine and make sure your products are not expired.

    Are These Tests 100% Accurate

    Testing out homemade pregnancy tests!

    The simple answer is no! DIY pregnancy tests are never 100% accurate. Though these tests are similar to pregnancy test kits, the results could be inaccurate for various reasons.

    There are no clear guidelines about the tests. Some tests dont mention the ratio in which the ingredients should be added. Furthermore, the quantity and quality of ingredients could delay the time taken for a reaction.

    DIY pregnancy tests should always be followed by a visit to the doctor, regardless of the results.

    Recommended Reading: How To Know If You Re Pregnant Or Not

    How Pregnancy Tests Work

    Pregnancy tests check your urine or blood for a hormone called human chorionic gonadotropin . This hormone is produced during pregnancy and can be detected as early as 10 days after conception, when a fertilised egg attaches to your womb.

    If hCG is found in your blood or urine, it is highly likely that you are pregnant.

    How Do Homemade Pregnancy Tests Work

    Homemade pregnancy tests work the same way as any over-the-counter pregnancy test by detecting the hormone human chorionic gonadotropin . If you test positive, you may observe a chemical reaction between hCG in your urine and the substance you are using to test.

    Your cells start to produce the hCG hormone when they start creating the placenta. This hormone increases rapidly early in pregnancy and enters your bloodstream and urine, confirming conception .

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    Whats Next If The Results Are Positive

    Your next steps depend on two things: whether youre pregnant and whether or not you planned to get pregnant.

    If your test results are positive and youve been planning to have a baby, take another test to make sure youre pregnant. Then, see your doctor before you reach the 8-week mark. You can ask them about prenatal care options or specialists who can help guide you through your pregnancy. Ask your doctor about any changes you need to make to your lifestyle, medications, or diet to keep yourself and your baby healthy for the next nine months.

    If your test results are positive but you didnt plan to get pregnant, ask your doctor about available options, including:

    • carrying the pregnancy to term for adoption
    • what to do if you want to continue your pregnancy

    You can also receive help from a clinic or health center that specializes in reproductive health and child care, like Planned Parenthood.

    Pregnancy Tests Performed By A Doctor

    Life List #14 â Part 1: 1+1 = 3?

    Nurses, doctors or specialists confirm a pregnancy with either urine or blood tests. The urine tests are similar to the home ones.

    The blood tests for pregnancy are more sensitive and accurate than urine tests. They can detect whether the hormone is present in your blood and how much hCG there is.

    Testing the level of hCG and the rate at which it increases is one way your doctor can tell if your pregnancy is normal. For example, an extremely high hCG level may be a sign you are expecting twins or have some disorder.

    Read Also: How To Fix Hair Loss After Pregnancy

    When Is Internal Fetal Monitoring Needed

    On occasion, internal fetal monitoring is needed to provide a more accurate reading of the fetal heart rate. Your bag of waters must be broken and your cervix must be partially dilated to use internal monitoring. Internal fetal monitoring involves inserting an electrode through the dilated cervix and attaching the electrode to the scalp of the fetus.

    How Accurate Are Homemade Pregnancy Tests

    No pregnancy test is 100 percent accurate. Its important to remember that although homemade pregnancy tests are fun, they are not scientifically proven pregnancy testing methods. Always confirm your pregnancy with a blood test or ultrasound through your OB-GYN or midwife.

    Also, homemade tests are trickier to read, and one person could interpret the results differently from another. You can also have false-negative or false-positive results.


    A false-positive means your test results were positive, but you are not pregnant. This kind of result is rare but could happen if you misinterpreted the results, took the test too soon after taking a fertility drug with hCG, or had a pregnancy loss soon after the fertilized egg attached to the uterine wall .

    Its always a good idea to take a few homemade tests rather than just one. If you get mixed results, wait a few days or a week, and retake the test, or use a store-bought home pregnancy test. Be sure to follow up with your healthcare provider to confirm your pregnancy and start your prenatal care.

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