In laboratory testing, First Response detected the pregnancy hormone levels in 60% of pregnant women 5 days before their expected period, in 86% of pregnant women 4 days before their expected period, in 96% of pregnant women 3 days before their expected period, in >99% of pregnant women 2 days before their expected ...

Product Comparison

Pregnancy tests work by detecting hCG levels in your urine. When a woman's urine comes in contact with the specially treated strip on a pregnancy test stick, results appear within minutes, indicating whether or not hCG, the pregnancy hormone, has been detected.

Home pregnancy tests can be up to 99% accurate. However, in some instances, they may produce a false-positive result. Incorrect test usage, previous abortions and miscarriages, and some medications may lead to a false-positive pregnancy test result. People should always see their doctor after a positive pregnancy test.

Results: Using a mixture of hCG, hyperglycosylated hCG and free β-subunit typical for early pregnancy, the sensitivity of the First Response manual and digital tests was 5.5 mIU/mL, while the sensitivities of the EPT and ClearBlue brand manual and digital tests was 22 mIU/mL.

Some at-home tests, like the First Response Early Result test we recommend, can detect hCG levels as low as 6 mIU/mL, but only about half the time. The sensitivity of the same test can also vary from person to person because everyone has a different mixture of hCG forms in their urine.

Some early pregnancy tests, such as the Clearblue® Early Digital Pregnancy Test and the Clearblue® Early Detection Pregnancy Test, can tell you whether you are pregnant as early as 6 days before your missed period (5 days before you expect your period)1.

More sensitive tests, like Clearblue Digital Pregnancy Test will detect the presence of hCG from five days before your missed period (which is four days before you expect your period). Because hCG is usually only present in your body when you're pregnant, false positive results are incredibly rare.

You may be surprised to learn that digital and analog home pregnancy tests work exactly the same way in providing you with an accurate pregnancy test result.

Can Too Much Pee on a Pregnancy Test Make It Negative? Urinating too much on a urine pregnancy test should not cause a false negative result. But diluted urine, or urine with a higher water content, can impact a pregnancy test by skewing results.

Read your results Your result will appear within 3 minutes, and some results may be shown in as little as 1 minute – the Smart Countdown will progress more quickly in this case. A 'Pregnant' (positive) result will remain on the display for up to 6 months.

2 Weeks Pregnant HCG Level Average hCG levels: Less than 10 U/L in non-pregnant women. 10 to 25 U/L for a 'borderline' pregnancy result. more than 25 U/L for a postive result.

However, hCG levels are very low for the first few weeks following conception. "Performing an early pregnancy test within the first couple weeks after you believe you have conceived, will result in a greater likelihood that you will have a false negative, notes Dr. Lessman.

So accurate... It's like 2 tests in 1 - it first detects if the pregnancy hormone is present with over 99% accuracy from the day of your expected period, and if you are pregnant, it ALSO indicates how many weeks since conception occurred 1-2, 2-3 or more than 3 weeks (3+).

For example, "some women might think they are five weeks pregnant but are really only four weeks pregnant," says Dr. Ughanze. "If a woman tests too early, the result can be falsely negative." The bottom line: It's highly recommended to take a pregnancy test at the right moment.

That's rare. But it is possible to get a positive result from a home pregnancy test when you're not pregnant. This is called a false-positive. A false-positive might happen if you had a pregnancy loss soon after the fertilized egg attached to the uterine lining.