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Home pregnancy test strips work on the principle of detecting the presence of human chorionic gonadotropin (HCG) hormone in a woman’s urine, which is only found in pregnant women. Home pregnancy tests are available at most drugstores and you can buy them online. Here are detailed instructions on how to use a pregnancy test.
Steps
Before Try
- Some experts advocate buying test strips from major drugstores where sales are high, where you’re more likely to get a new product instead of buying the wrong one that’s been on the shelf for months. Similarly, if you’ve been keeping a test strip at home for several months, it’s a good idea to throw it away, especially if you leave it in a warm and humid place as it may give false results. [1] X Research Source
- Some brands claim their products can detect pregnancy accurately on the day of the missed period, or even earlier. While it is true that test strips can be sensitive enough to detect low levels of hCG in the urine, the body does not produce enough hCG at the time of conception. In that case the result may be negative even though you are already pregnant. [1] X Research Source
- Many pregnancy test strips of unknown brands are manufactured in large factories and they use the same manufacturing technology as the established brands. Therefore, don’t worry about the quality of the new brands if you want to save some money. [2] X Research Source
- hCG begins to be produced in the body after a fertilized egg attaches to the uterus. Normally, the fertilized egg attaches to the uterine wall about 6 days after the egg and sperm meet. That’s why home pregnancy tests can’t detect hCG if you take it too soon, even if you’ve actually conceived. [4] X Trusted Source Mayo Clinic Go to Source
- It’s best to take a pregnancy test early in the morning when your urine has the highest concentration of hCG. [1] X Research Source
- It’s better to learn about the symbols before you start trying to avoid having to rush through the sign reading instructions when the results are available.
- Products often have instructions or a toll-free number on the box, where you can ask your questions, such as testing methods, or questions about the product itself. [4] X Trusted Source Mayo Clinic Go to Source
Start Try
- If the test method requires urinating directly on the stick, you must follow the instructions exactly. Because with some tests you need to urinate on the stick for a certain amount of time, for example exactly 5 seconds no more and no less. Use a stopwatch to time it if needed.
- When urinating, be sure to place the absorber end of the stick in the urine stream and turn the display window facing up.
- Don’t stare at the stick during the waiting time because time will seem to pass more slowly, making you even more anxious. Quit doing something else to distract yourself, like making tea or doing some short exercise.
- Some types of rods have a time symbol or a display bar that shows the rod is working. If you use a stick with this function and nothing appears on the display, the test may have failed, you must use another stick to try again.
- Sometimes text or symbols appear very faint on the screen, if this happens you can still consider it a positive result, as it shows hCG has appeared in the urine. False positives are very rare. [6] X Research Sources
- If the result is positive: You should see your doctor to confirm the status of the embryo. Normally, your doctor will give you a blood test to get a final conclusion. [7] X Research Sources
- If the result is negative: Wait another week and you still have not had a period, then you should take another pregnancy test. False negatives are common, especially if you miscalculate your ovulation or take the test too early, and that’s why pregnancy tests are often sold as two in a box. If the second test is still negative, you should see a doctor to find out what is causing the menstrual cycle, or the symptoms of pregnancy. [4] X Trusted Source Mayo Clinic Go to Source
Advice
- If the test is positive, try a few more times to make sure all the results are the same.
- Avoid drinking too much liquid before the test as the urine will be diluted and potentially lead to a false negative result. [4] X Trusted Source Mayo Clinic Go to Source
Warning
- Signs often associated with pregnancy such as missed periods, weight gain, nausea etc. can also be symptoms of dangerous diseases that need to be treated. Don’t ignore these signs with home-made test results alone, you should contact a healthcare professional for more information.
- Although false-positive results are rare, they are not unheard of. You’ll get a false positive if you’ve recently had a chemical pregnancy (i.e. an egg was fertilized but not developed), have recently taken medicine containing hCG, or are using an expired or damaged pregnancy test. [1] X Research Source
wikiHow is a “wiki” site, which means that many of the articles here are written by multiple authors. To create this article, 18 people, some of whom are anonymous, have edited and improved the article over time.
This article has been viewed 12,231 times.
Home pregnancy test strips work on the principle of detecting the presence of human chorionic gonadotropin (HCG) hormone in a woman’s urine, which is only found in pregnant women. Home pregnancy tests are available at most drugstores and you can buy them online. Here are detailed instructions on how to use a pregnancy test.
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