What are the most accurate pregnancy tests

what are the most accurate pregnancy tests

Best Pregnancy Tests with Most Accurate Results 2020 Edition

Jan 19, The FRER, as it is often called by its users, is quite possibly the most accurate at-home pregnancy test over 99% accurate from the day of your expected period. It is also the only one that can be used as early as 5 days prior to your missed period. The reason for its popularity is . Dec 14, There are two main ways you can take pregnancy tests: At a doctor's office with a blood or urine test. "The most accurate will be blood tests, followed by a urine test in the doctor's office," says Sheryl Ross, MD, OB-GYN in Santa Monica, California. "Ten days after ovulation, the blood testing is Author: Ashley Laderer.

The result displayed on a pregnancy test can be life-changing, so you need a clear, accurate result. After more than 50 hours of what are the most accurate pregnancy tests, talking to a pregnancy hormone hCG expert and an ob-gyn, drinking too many cups of tea, and peeing on more than 60 sticks and strips, we think the First Response Early Result manual test is the pregnancy test to take. The First Response Early Result manual test is the most sensitive over-the-counter pregnancy test you can buy.

It gives accurate results as or more quickly than most of the tests we considered and is just as easy to read as a digital test. We found that it gives a clear result quickly, and its ergonomic design makes the handle easier to hold onto compared with the wands on comparable tests. Cheap and simple, you can blow through a ton of these strip tests without spending much. These are thin strips that you dip in a cup of pee.

These strips afcurate about half as what are the most accurate pregnancy tests as comparable tests and less than a tenth of the cost of a single manual test. For this guide, we interviewed Laurence Cole, PhD, a researcher who has long studied home pregnancy tests, and Dr. Home pregnancy tests measure the small amount of hormones that the body produces when a fertilized egg is implanting and beginning to grow. Specifically, they contain antibodies that can pick up the presence of human chorionic gonadotropin hCG in pee.

Two types of hCG are important in early pregnancy. The first, hCG, is a hormone responsible for forming the mechanism by which the placenta gives nutrients to the fetus. The second, hyperglycosylated hCG or hCG-his a whole different, unrelated molecule. In very early pregnancy weeks three and four only hCG-h is present, Cole said. Amounts of this hormone double roughly every 72 hours in early pregnancy, reaching their peak around eight to 11 weeks, then level off for the remainder of the pregnancy.

Levels of hCG in pee can vary a lot as well. This is a pregnancy that fails to develop beyond how to help someone with bdd earliest stages, often resulting preynancy a miscarriage around the time menstrual bleeding would be expected.

False negatives, where you are pregnant but get a negative reading on a pregnancy test, are much more common. According to Dr. If you think you may be pregnant and take the test prior to a missed period and get a negative result, wait a week and take the test again. To obtain the most accurate pregnanch, test after missing an expected period. The longer you wait after a missed period, the more accurate the test becomes. Pregnancy tests should be four things: sensitive enough to pick up on pregnancy early accurahe, easy to use, easy to read, and relatively cheap.

Is this combo too much to ask for? Luckily, there is a wealth of scientific data on the accuracy of home pregnancy tests. That being the case, we did not run our own accuracy tests but instead relied on the experts. These tests also detect hCG-h but not as well as First Response. In addition to accuracy, we considered test usability, readability, and cost.

Some home pregnancy tests require that you pee in a clean cup then dip a strip into the urine. Others are housed in plastic wands and have absorbent tips that you can pee directly onto, or dip if you choose.

We considered both test types, finding the latter easier to use and read. After taking a few digital tests apart, we learned that they actually use the exact same strips you find in manual tests, only the digital test has a sensor to detect the darkened line for youoften about a minute after most people would be able to eyeball it themselves using a manual test. However, readers have been asking us about cheap, strip-type tests you can buy in bulk online, so we compared these to determine the best choice in this category despite the fact that Cole told us that these are generally less sensitive than the more expensive stick tests.

Design is important toohow easy it is to use and how easy it is to read. I took six of each acfurate our contenders and put them through the paces.

I tested them multiple times using both the midstream and pee-in-a-cup-and-dip methods. Since I was nine months pregnant at the time of testing, I dipped the various strips in water and, in one case, had my husband pee on one to confirm known negative results. I also diluted my own urine down by 1, times in water to see what a barely positive looked like.

In short: I totally abused these things. Two female staff members, neither of whom was pregnant at the time of testing, also tried each of these in both the midstream and dip methods and added their feedback. In our experience, none of these how to draw anime comic gave what are known as evaporation lineswhich are lines that can sometimes appear on manual tests and be mistaken for a positive result.

In addition, in our tests it gave the clearest positive reading to a very dilute solution how to play nfs most wanted 2012 pregnancy-positive pee. Results came in what are some chinese inventions, taking only 40 to 45 seconds on average.

To mimic the earliest days of pregnancy, I prepared a very dilute solution of hCG-positive urine. As you can see in the photo, the First Response manual test showed a very clear positive response with a strong fuchsia line, while the other pregnancy tests barely registered faint blue marks. The current First Response manual test has an ergonomic, user-friendly shape. It has a nice wide tip, so hitting that target while on the toilet is a little bit easier, should you choose to use the midstream method.

It also has a curved handle with grippy texture on the back that makes it easy to pergnancy hold onto and pick up from a table. Plus the handle is big enough to wrap your whole hand around, not just pinch between thumb and forefinger. That made me feel that I was less likely to drop the whole thing in the toilet tne. The First Response test is easy to read, although the varying prsgnancy of the mkst lines can be a little confusing.

In one test, with full-strength, positive urine, the pink line on the right was much, much lighter than the positive line. It does say in accuratw brochure that this can happen. This changed when I tested the diluted solutions of urine. In this case, the line on the right was much brighter than the positive line. However, there was no mistaking the positive line.

Some people have complained that the curved window in the redesigned test makes it harder to read. Depending on how the light hits that plastic window, there can be a reflection that some people might mistake for a second line. It has a thin, grip-friendly handle that we how to do commercial loans makes it better to hold than the EPT test though not as easy to hold as the First Response.

Like the First Response test, it has a fat tip, making it a generous target for a stream of pee. The absorbent pad on the Clearblue manual test turns pink when it gets wet, so you can see when it starts working. I got a positive from what is sampling with replacement Clearblue test in as little as 10 seconds on one occasion, but the average was more like 45 to 50 seconds, for either positive or negative.

Still, thousands of customer aare have found these test strips to be accurate, as did a Wirecutter editor for whom the ClinicalGuard test strips gave faint-but-detectable true-positive results three days before an expected period and clear negative results when she was not pregnant.

Strip tests use the same technology as the manual tests we recommend and display the results similarly; they just lack the plastic housing that make manual and digital tests easier to use and read. You cannot pee directly onto these. Instead, you dip them into a cup of urine. The advantage is that strip tests typically cost less than a tenth whay what our other picks cost.

Everything elsethe size of the strip, the time to tsets, the ease of usewas Exactly. As far as manual vs. This surprised me. Before working on this guide, when shopping for pregnancy tests I made a beeline for the digital ones. But I have since found that the manual tests do give a clear answer. Also, the manual testswhich contain no circuitryare much less likely to fail on you. They are also much faster at giving a result: Around 40 seconds on average versus 3 minutes?

Um, yeah. In the grand scheme of things, 3 minutes is not long to wait at all. The funny thing is that digital tests are really just manual tests with a battery and a sensor that reads the lines for you. I cracked open all three brands of digital tests, and they look just like the manual ones on the inside. See that strip in the picture above? Look familiar? So basically, it just reads those lines for you and tells you, in writing, whether the strip detected hCG.

But it takes longer to do this than you likely would. The manufacturers themselves note that digital tests tend to be less sensitive than manual ones.

According to the boxes of all of these tests, these are the stats obtained from lab testing:. First Response: The manual test picks up on 76 percent of pregnancies five days out from ppregnancy expected period date, while the digital test says yes to only 60 percent of people who are actually pregnant at that time. Clearblue: The manual tests give a positive to 56 percent of people who are actually pregnant four days before a missed period, and the digital gives tedts positive to 51 percent.

These numbers are 98 percent and 95 percent, respectively, for the day of a missed period. On the day of a missed period, these numbers jump to 99 how to draw out a blind pimple. He found that the First Response manual test was the most sensitive of all those tested. First Response Digital gave me a false negative. The instructions say it should take 3 minutes. The Clearblue Digital is a bit clunkier and heavier than the manual test.

Both were really easy to read, but the manual test gave faster results. The manual tests took a speedy 20 to how to growth in breast seconds, although it usually took up to 40 seconds for the test line to appear.

EPT suggests not reading qre test before pfegnancy minutes. The EPT Digital was the speediest of the lot what does our government spend the most money on gave me results in less than 2 minutes. The digital tests are supposed to be read after 3 minutes, although the brochure says some results show up mpst as little as 1 minute. As with the test strips we recommend from ClinicalGuard, you must first pee in a clean cup to use this test.

How Pregnancy Tests Work

After having obtained a degree in biochemistry, Leah works for a small biotechnology company and enjoys writing about science. Pregnancy tests determine the amount of human chorionic gonadotropin, or hCG, circulating throughout a woman's body. A quantitative blood test is the most accurate pregnancy test, as the specific amount of beta hCG is determined. This level can be observed over time to determine if a pregnancy is healthy, or if a miscarriage is likely to occur.

Qualitative blood tests and urine tests simply detect whether hCG is present or not, according to the test's cut-off value for sensitivity. Home pregnancy tests work by binding the hCG in a woman's urine to an antibody.

The antibody is anti-hCG and will bind to hormone: this antibody is coupled with a pink or blue dye indicator. As the urine moves up the membrane, it crosses two "lines" - one is the "test" line, which has an antibody anchored to the test membrane. The second is a control line, contains an antibody to the dye this is an indicator the test has functioned properly - if no control line appears, the test is invalid.

If a woman has hCG bound to the antibody, it will bind to the antibody on the test line and the color will begin to develop. If there is no hCG or insufficient hCG in the urine, the antibody will "wash over" the test line and the dye will adhere to the control line.

No color will develop on the test line in this second scenario. Home pregnancy tests use antibodies and dyes to detect hCG in urine. A quantitative test determines the actual amount of beta hCG in a pregnant woman's bloodstream. Beta hCG is a sub-unit of the human chorionic gonadotropin hormone. Very small amounts of hCG may be detected with this blood test, and the results can be monitored over time to determine if the quantity of hCG is increasing with time.

In healthy pregnancies, the level of hCG should double every hours. A qualitative blood pregnancy test is similar to a urine test: this test simply determines if hCG is present or not. Women who are worried about levels of hCG should have a quantitative test performed, not a qualitative test. There are three main types of home pregnancy tests: pink dye tests, blue dye tests,and digital result tests.

All forms offer "early result" testing, though a pink dye test First Response Early Response offers the most sensitivity. This test may detect a pregnancy as early as 6 days before an expected menstrual cycle, though many women will not obtain a positive until after that point in time, as the embryo does not generate detectable amounts of hCG until it has implanted into the uterine wall.

A quantitative blood test is the most accurate pregnancy test, as it detects very low levels of hCG and can demonstrate the change in levels over time.

If an early detection pregnancy test continues to show very faint lines that don't darken, a quantitative blood test may be ordered to determine if hCG levels are rising at a normal rate. The digital tests have a readout that is unambiguous: the result will either say, "pregnant," or "not pregnant.

Digital tests are expensive, however, and many versions are not quite as sensitive as the pink and blue dye tests available on the market. Many expectant mothers will take a cheaper "dye" test first, and if the results are ambiguous, use the digital version as a method of confirmation.

First Response and Clearblue both make early detection digital tests: the First Response Gold may detect a pregnancy as early as 5 days before a missed menstrual cycle. Like all "early result" tests, a negative may be obtained until after a period is missed: the embryo has to implant and start producing the hCG hormone before a positive result can be obtained. The Clearblue company offers a test that includes a conception indicator.

This test not only will identify a pregnancy, but will also estimate the approximate gestational age of the baby. This test is best used after the day of a missed period - though the test claims it is able to detect a pregnancy up to four days before a missed cycle. This calculation is based on the amount of hCG in the mother's urine.

An extremely faint "test" line appears, but is almost impossible to see. If this occurs, wait 48 hours and test again. Many home pregnancy tests use a pink dye to indicate results. First Response is a pink dye test. Faint lines generated by a pink dye test may be more difficult to detect than with a blue dye test, though these tests are less likely to produce an evaporation line that results in a false positive.

The packaging of the test will reveal which type of dye is used: if the picture on the package shows results with pink lines, then it is a pink dye test. Blue result lines indicate a blue dye test. A First Response Early Response pink dye test: the test showed a very faint positive at 14 and 15 days post-ovulation, but developed a stronger line at 16 days post ovulation.

Pregnancy tests that use blue dye are easily visible, removing some of the ambiguity that a faint pink line may generate. Blue dye tests are known to generate false positives, however, because an evaporation line or "dotted line" may appear on the test.

If a very thin, dotted line appears on a blue dye test and the results are in question, confirm the results with a digital test or a pink dye test. Early detection home pregnancy tests will identify very low levels of hCG in the mother's urine.

This allows a woman to test for pregnancy up to six days before her expected menstrual cycle. Unfortunately, some women will then have their period on time - or a few days late. This occurs when the embryo doesn't completely implant, or is miscarried at a very early stage. This is known as a "chemical pregnancy," as the early result urine test will show a positive, but the mother has a normal menstrual cycle. The best way to avoid detecting a "chemical pregnancy" is to wait until the first day of a missed menstrual cycle, as the hCG levels should be high enough to indicate full implantation of the embryo by that time.

Some women will test with an early detection test and receive a negative result, only to find they are actually pregnant. The embryo will not secrete hCG until it has implanted, so a woman who ovulates late or an embryo that implants late may not generate enough hormone until the woman has missed her period. Interpret early detection pregnancy results with caution, especially if the test line is very faint.

A pregnancy can be verified and monitored by obtaining a quantitative blood test, which will monitor beta hCG levels over time. Increasing hCG levels doubling every hours is a good sign, and decreasing hCG levels generally indicate an impending miscarriage. Strip pregnancy tests may be purchased online and are a twentieth of the cost of the cartridge versions.

The cheapest pregnancy tests may be purchased online. These tests arrive as indicator strips, without a plastic cartridge to contain the strip. For prospective mommies who are testing frequently, these tests are the best way to go. As many as testing strips can be purchased for the same price as a single digital pregnancy test! Wait until the first day of your missed period to use one of these tests.

Drugs, supplements, and natural remedies may have dangerous side effects. If pregnant or nursing, consult with a qualified provider on an individual basis. Seek immediate help if you are experiencing a medical emergency. Answer: Over the counter urine pregnancy tests are not as accurate as a quantitative blood hCG obtained by your physician. If you are getting inconsistent results, your physician should be consulted to order a quantitative analysis of the pregnancy hormone in your blood to give a precise clinical answer to whether you are pregnant or not.

Question: I did a quantitative test 11 days post ovulation, but it was negative. When can I do a home test, as I still have no period 14 days post ovulation? Answer: Was your quantitative test a blood hCG evaluation ordered by your physician? You may perform a home urine test at any time, though the results of a blood beta hCG test are more accurate and more sensitive than a urine test performed at home. Eleven days DPO is very early to perform a pregnancy test, as usually the menstrual cycle wouldn't be expected until around 14 days post ovulation.

If you are pregnant, you should get a positive on a home urine pregnancy test by around 21 DPO. There are also several reasons a period might be late when you are not pregnant.

Your physician should be consulted if there are any concerns about a potential pregnancy or irregular cycles. I'm definitely a fan of the beta hCG blood tests - while most women will probably not need them, they have been able to help with the detection of ectopic pregnancy. Fortunately, my ectopics were identified early and my health wasn't compromised!

Thanks for the coment, jenp! Thanks for this hub. It's well researched and written. I just recently started writing articles about pregnancy, and yours is a great model! Thanks, Mridul. I am the one who wrote the article, but Riverfish is a great commenter! A lot of older texts talk about the baby "quickening" and that was the real confirmation that a baby was truly on the way - I can't imagine not really knowing for sure until I was months along!

Women now know as early as days before they have even missed a cycle! Thanks for the comment, hyphenbird. Wow, I am just amazed at the science behind a pregnancy test. Your research is impeccable and astonishing. I am well past the age to ever need one but can talk them up now.

When I was pregnant, we just got sick, missed a couple of cycles and finally went to the doctor for an actual confirmation.

Thanks, Riverfish - the digital tests are nice because of the clear read-out, but they are more expensive. The paper strip tests are really inexpensive and can be purchased in bulk by parents who are trying to conceive! Some pregnancy tests are more sensitive than others, Teaches, though none of them will detect a pregnancy until the baby has implanted - so even the "early detection" tests will show a negative until this has occurred.

I like the digital tests because they remove all traces of doubt! Well done, Leah. I am past this stage but I know this hub will help many out there who need to know how to read them and how to choose the best product for the job.

Voted way up! A list of pregnancy tests that are the most sensitive, whether to use a blue dye or pink dye test, whether or not digital tests are less sensitive, and all about early pregnancy testing. Slow rising hCG levels may indicate an ectopic pregnancy. Normal pregnancies should demonstrate a hormone doubling time of hours.

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