Written by: Dr. Amy Beckley, PhD, Founder and Inventor that the Proov test — the an initial and just FDA-cleared test to confirm effective ovulation in ~ home.

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Some women case ovulation tests may be able to detect beforehand pregnancy. Keep analysis to learn if this is true!

Ovulation tests are beneficial tools as soon as trying to conceive, together they can provide you insight into her fertile window — the days during your cycle as soon as you’re most most likely to conceive.

However, part women case ovulation tests may be able to detect early on pregnancy. Is this true? Keep analysis to find out!

What space ovulation tests?

Ovulation test (also dubbed LH tests) space urine-based hormone tests that detect alters in luteinizing hormone (LH) levels to predict once ovulation is going come occur. LH is the hormone that surges about 24-36 hours before ovulation in bespeak to create the ovary to relax the egg.

Ovulation tests may be either thin straightforward urine strips or digital-based tests.

Urine-based exam — prefer Proov predict — have actually a control line that will instantly rotate pink in call with your urine, proof that the test is valid. The 2nd line is the check line; the strongness or darkness the the test line depends on the quantity of LH current in her urine.

We always have a little bit the LH in our bodies, regardless of whereby we room in our cycle, for this reason it’s not unusual to gain a faint pink 2nd line on your strip. This doesn’t average the check is positive! because that an ovulation test to it is in positive, the test line should be together dark or darker 보다 the control line. A test with two similar lines shows the start of the LH surge and also that ovulation is approaching.

Digital ovulation tests, ~ above the various other hand, usage smileys rather of currently to indicate LH levels. As soon as your level of LH space really low, girlfriend will gain an north circle indicating the check is negative. Together your follicles grow and also estrogen progressively starts increasing, you may start gaining a flashing smiley face, indicating you space approaching the surge. These tests are considered positive (meaning LH is surging) once there is a heavy smiley face.

Why should I usage ovulation tests?

Ovulation tests are most commonly used as soon as trying to conceive, in order come time intercourse so the you increase your opportunities of conception. Together you may know, over there are only a few days every cycle when you can efficiently conceive.

These work are referred to as your “fertile window” and they room the couple of days top up to and also the job of ovulation. A optimistic ovulation test shows the opened of your abundant window.


A optimistic ovulation test suggests the opening of your fertile window.

When do I use an ovulation test?

If you room using Proov Predict, we recommend start to check LH levels about 18 days before your following suspected period. If her cycles are irregular or if the is your very first time testing, you may start using your LH test a couple of days ~ the critical day of her period. If you’re not utilizing Proov Predict, us recommend reading the instructions because that your particular ovulation test brand, together protocols can vary.

LH surges in blood an extremely early in the morning and also then needs another couple of hours to present in urine. 

This is why experimentation with 2nd morning urine, usually roughly noon after a couple of hours hold, deserve to be more accurate than experimentation with very first morning urine. Luckily though, we include plenty of LH tests in our Proov Predict kit so the you can test levels two times every day!

Once you gain your an initial positive ovulation test, this is taken into consideration your “peak” day. Ovulation typically occurs 12 to 36 hours post surge however some women might ovulate a little bit earlier and also others a little bit later.

One thing to keep in mind though: it periodically happens the an LH rise doesn’t finish up in ovulation, her body may equipment up to relax the egg but the surge might not actually an outcome in ovulation. This is why confirming ovulation is for this reason important!

Can one ovulation test detect early pregnancy?

Although they both have two lines and also use urine, ovulation and also pregnancy tests room not the same. As we know, ovulation tests measure up LH in urine come predict ovulation. Pregnancy tests, top top the other hand, measure human chorionic gonadotropin (hCG) to confirm pregnancy.

Yet, friend may have actually heard part women claim that one ovulation test can detect at an early stage pregnancy. How could this also happen?

It’s all thanks to chemistry!

Both LH and hCG are proteins the are built with a street attached to them. Their features are fully different, v LH triggering ovulation and also hCG preserving pregnancy. Yet their structures are an extremely similar!

So comparable that part ovulation tests aren’t sensitive enough to tell the difference between LH and hCG in urine. While the is unlikely for a woman to use an ovulation check at the finish of she luteal phase when she is well previous peak fertility, part do and also — if lock pregnant — can gain a optimistic result.


LH and also hCG’s structures are so similar that some ovulation tests no sensitive sufficient to call the difference in between the 2 in urine.

Why have to I use a pregnancy test rather of one ovulation test?

Although part ovulation tests may be able to detect pregnancy, we recommend sticking with each test’s suggested use: ovulation tests because that predicting ovulation and also pregnancy tests for confirming pregnancy.

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As us mentioned, pregnancy tests recognize hCG, i beg your pardon is only produced by the placenta after you’ve properly conceived. The visibility of hCG confirms, without a doubt, that you are in reality pregnant.

An LH check on the other hand might occasionally turn confident in at an early stage pregnancy can be misleading as some females just have actually high LH level throughout their cycle. Part women even get a 2nd LH rise just before their period, so an ovulation test can be detecting this rather of pregnancy. To be confident in your test results, us recommend making use of each test as directed!

How soon deserve to a pregnancy test detect early on pregnancy?

Implantation can take place anytime between days 6 through 12 ~ ovulation. Studies actually present that the most usual implantation job is work 9 article ovulation. As soon as implantation occurs, it can take about 24 hours for hCG to show up in her urine.

So while some residence pregnancy tests claim to detect early on pregnancy, castle technically cannot detect hCG until it appears in urine. If we’re complying with the above guidelines, this might be as beforehand as day 7 article ovulation or, more likely, day 10 write-up ovulation.

This is something to save in mind because if you test as well early, you’re an ext likely to obtain a negative result and count yourself the end that bicycle when, in reality, the embryo could have implanted later!

While the scientific research behind utilizing an ovulation test as a pregnancy test is super cool, us still recommend utilizing each test because that what they’re meant to do. Both are crucial on your TTC journey!