There are two types of pregnancy tests; one uses a urine sample, the other a sample of blood. Both pregnancy tests detect the presence of a hormone called human chorionic gonadotropin (hCG). This hormone is produced by the placenta shortly after the embryo attaches to the uterine lining and builds up rapidly in your body in the first few days of pregnancy. It is this rapid shift in hormones that trigger most of your pregnancy symptoms. Show
Types of Pregnancy TestsUrine TestsUrine tests can be performed in two different ways and these can be performed at home or in a clinic. One way involves collecting your urine in a cup and dipping a stick into the urine or putting urine into a special container with an eyedropper. Another option involves placing a stick into your urine stream and catching your urine in midstream. Tests vary in how long you have to wait to get a result. You will be looking for a change in color, a line, or a symbol (like a plus or minus). The newer digital pregnancy test offered by Clearblue Easy makes reading your results simple: the window will either show the words “not pregnant” or “pregnant”. All tests come with instructions, and it is important that you follow these instructions to get an accurate reading. How soon can I take a urine test?Most doctors recommend that you wait until the first day of your missed period before taking a urine pregnancy test. This is usually about two weeks after conception. However, some tests are more sensitive than others and can be taken earlier. How accurate are urine tests?Urine tests or home pregnancy tests are around 97% accurate when done correctly. Home pregnancy tests are great to use because they can be done at home, they are usually low in cost (anywhere from $7.99 to $19.99), private, they give a fast result, and are easy to use. However, if done incorrectly or taken too early, the result can be inaccurate. If you get a negative result and still have symptoms of pregnancy (missed period, nausea, breast tenderness, and fatigue), wait a week and take another test or contact your doctor so you can have a blood test done. Blood TestsThere are two types of blood tests. A quantitative blood test measures the exact amount of hCG in the blood, and a qualitative hCG blood test gives a simple yes or no answer to whether you are pregnant or not. Advantages of having a blood test done:
Disadvantages of having a blood test done:
Frequently Asked Questions About Pregnancy TestsIf I get a positive result on a home pregnancy test, does that mean I am pregnant?A positive result from a home pregnancy test shows the presence of the hormone hCG in your system. When an egg is implanted in a woman’s uterine lining, hCG hormones begin to develop and multiply. This is a sign that you have become pregnant. If I get a negative result on a home pregnancy test, does that mean I am not pregnant?A negative result can mean that you are not pregnant, you took the test too early, or you took the test wrong. Pregnancy tests vary in their sensitivity (how soon they can detect the hormone hCG), and you may not have given your body enough time to produce enough hCG hormones that will show up on the test. Also, if you let a test sit for too long (after the instructions on the box tell you), the test is invalid. It is best to follow the instructions and wait until you have missed a period before taking the test. Most pregnancy tests come with two in a box, and it is a good idea to take both. How soon can I take a home pregnancy test?It is recommended that you wait until you have missed a period to take a home test. A missed period is often one of the first signs of pregnancy. If you cannot wait that long to find out and you know the day you may have conceived, then the earliest you can take a test would be 14 days from possible conception. What if I take a couple of home pregnancy tests and get different answers?If you have received different answers on multiple pregnancy tests, it is recommended that you get a blood test done to get an accurate answer. Want to Know More?
Compiled using information from the following sources: 1. MedlinePlus [Internet]. Bethesda (MD): National Library of Medicine (US); Prenatal Testing. https://www.nlm.nih.gov 2. U.S. Department of Health and Human Services How do you make a pregnancy test turn positive?Top 12 ways of faking a positive pregnancy test
How early can home pregnancy tests show positive results?The earliest you can get a positive result on the most sensitive pregnancy tests is 3-4 days after implantation, 11-12 days after ovulation/fertilization or about 2 days prior to your next period. But the majority of home pregnancy tests will not be positive until you miss a period.
How soon will a pregnancy test read positive?When is a blood pregnancy test positive?
What would cause a false positive pregnancy?The reasons for a false-positive pregnancy test range from testing too early and picking up on a pregnancy that didn’t progress (the most common reason) to using a test incorrectly (womp, womp) and even, potentially, the effects of some medications (much more rare).
How soon will a positive pregnancy test show?In many cases, you might get a positive from an at-home test as early as 10 days after conception. For a more accurate result, wait until after you've missed your period to take a test. Remember, if you take a test too soon it could be negative even if you are pregnant.
How long does it take for hCG to show up in urine?hCG is a hormone produced by your placenta when you are pregnant. It appears shortly after the embryo attaches to the wall of the uterus. If you are pregnant, this hormone increases very rapidly. If you have a 28 day menstrual cycle, you can detect hCG in your urine 12-15 days after ovulation.
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How long does it take before pregnancy test shows positive
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