How does a pregnancy test work? – All pregnancy tests detect the hormone human chorionic gonadotrophin (hCG), which starts to be produced around 6 days after fertilisation. Most pregnancy tests come in a box that contains 1 or 2 long sticks. You pee on the stick and the result appears on the stick after a few minutes. All tests are slightly different, so always check the instructions.
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What is the best time to check pregnancy using kit?
– You should wait to take a pregnancy test until the week after your missed period for the most accurate result. If you don’t want to wait until you’ve missed your period, you should wait at least one to two weeks after you had sex. If you are pregnant, your body needs time to develop detectable levels of HCG.
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How does a positive pregnancy test kit look like?
What does a positive pregnancy test result look like? – A positive pregnancy test result will typically either show up as a plus sign, two double lines, or one line in a results circle or window, though there are other kinds of test results, including the digital ones that show the word “yes” or “pregnant” when they’re positive.
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What is negative pregnancy test?
A negative pregnancy test result means the test hasn’t detected hCG in your urine. If your period is very late, or you’ve skipped your period, and you get a negative result, you are unlikely to be pregnant.
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What Colour is a positive pregnancy test?
How Does a Pregnancy Test Work? – For a quick primer, at-home pregnancy tests check your urine for Human Chorionic Gonadotropin hormone, or hCG, which ramps up quickly in your body after fertilization. The lines on a pregnancy test develop color if hCG is detected. An at-home First Response™ pregnancy test works like this:
Special reagents are deposited at 2 locations on a pregnancy test strip, forming the “control line” and the “test line.” These test reagents may appear as off-white/slightly gray lines on the test strip – before or after use. In a First Response™ pregnancy test, these reagents are gold nanoparticles, which appear pink in color. They are responsible for turning the lines pink once the test is used. If no hCG is detected in your urine, only the control line will appear pink colored. If hCG is present in the urine, both the test line and control line will appear pink. Two pink lines indicate a positive result, even if one line is fainter than the other.
Some tests, like First Response™ Early Result Pregnancy Tests, are very sensitive and can detect lower levels of hCG so you can test as early as 6 days sooner.*
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Are pregnancy tests 100% correct?
How accurate are pregnancy tests? – Pregnancy tests are super accurate when you use them correctly. The pregnancy tests you get at the drugstore work 99 out of 100 times. They’re just as accurate as a urine pregnancy test that you’d get at a doctor’s office.
Pregnancy tests work by checking your urine (pee) for a hormone called human chorionic gonadotropin (HCG). Your body only makes this hormone if you’re pregnant. HCG is released when a fertilized egg attaches to the lining of your uterus — when pregnancy begins. If your pregnancy test results are positive, it means you’re pregnant.
If they’re negative, it means you’re not pregnant. Pregnancy tests are most accurate when you take them after you’ve already missed your period. A pregnancy test will be less accurate if it’s expired or if you don’t use it the right way. So always check the expiration date on the package, and carefully read the directions that come with your pregnancy test.
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Am I late or pregnant?
Final thoughts: things to keep in mind – The bottom line is that without a blood test, it’s nearly impossible to know for sure whether you’re pregnant or experiencing a late period. Even home pregnancy tests can sometimes give a false negative, if taken too early, so it’s really smart to wait to take a test until or after your expected period.
- If you’re paying attention to your symptoms, just know that it can get a little stressful for some women.
- So if you find yourself symptom spotting, try to be aware of how often you do it, and how you feel – does it distract you or stress you out? If it starts to get emotionally taxing for you, look for ways to stop paying attention to your symptoms.
Finally, make sure you’ve scheduled a pregnancy blood test, and keep taking your prenatal vitamins! Whether it’s sooner or later, when you get that BFP, you’ll be glad you did!
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How do you know if a pregnancy test strip is positive?
READING THE RESULT – POSITIVE RESULT If two coloured lines appear on the test strip, you are pregnant. One line may appear lighter than the other, but they will both be the same thickness. A faint line is more likely to occur when you are testing early and your hCG levels are low.
- See Questions 5 and 7 in the frequently asked questions.
- NEGATIVE RESULT If only one coloured line appears on the test strip this is a negative result and you are either not pregnant or you may have tested too early.
- If you are unsure repeat the test in 48 hours with a new test strip.
- See Questions 6 and 7 in the frequently asked questions.
INVALID RESULT If no lines appear anywhere on the test strip or if only the test line appears, the test has not worked properly and is invalid. This is usually due to the strip not being wet enough. Repeat the test with a new test strip ensuring that the strip is immersed in the urine sample for the full 10 seconds. 
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