Spread the love

What does a faint line on an ovulation test mean?

Did you know that you can test for ovulation? But ovulation tests aren’t as simple as other health tests. Let’s talk about reading different results on ovulation tests and what a faint line on an ovulation test means. 

You may know that a light line is all you need for a positive pregnancy test. Ovulation tests are a little different. 

First, a brief review of what ovulation is and what ovulation tests are measuring. 

Ovulation is when your ovary releases a mature egg into the fallopian tube. This happens in the 12-14 days before your next cycle. 

The 4 days before ovulation, the day of ovulation, and the day after ovulation constitute your “fertile window.”

With an egg in the fallopian tube, it’s the easiest time for sperm to swim up and fertilize the egg. You will have high chances of conception during this window. 

So knowing your fertile window and the day of your ovulation exactly, will be helpful if you’re planning to get pregnant. Can an ovulation test help you with that?

Here’s the kicker: positive ovulation tests are not actually telling you that you’re ovulating. They’re telling you your body is preparing to ovulate. Read on to know what we’re getting at.

Lines on ovulation tests: what do they mean?

Lines on ovulation tests

Ovulation tests measure the level of luteinizing hormone, or LH, in your pee. This hormone rises about a day (24-36 hours) before ovulation, and tells the ovaries to release a mature egg, triggering ovulation. 

Learn More : LH Surge and Ovulation: When do you ovulate after an LH surge?

Most ovulation tests have an average threshold for testing the LH levels. If you surpass that threshold, you will get a positive test result.

Ovulation tests are very accurate at detecting LH: with almost 99% accuracy. So, when you track your cycle with an ovulation test, it will indicate that your body is undergoing changes and you can accordingly plan conception. 

But – and this is important to note –  high LH doesn’t always mean that ovulation will happen. 

Many women have low levels of LH in their pee at other times in their cycle, or they may have peaks of LH that aren’t followed by ovulation. A cycle during which ovulation doesn’t occur is called an anovulatory cycle

Women with Polycystic Ovarian Syndrome (PCOS) may have LH levels away from the baseline throughout the month. That doesn’t necessarily mean they’ve released an egg, though.

In fact, women with PCOS may have a positive ovulation test throughout the month, yet never ovulate within that cycle, due to a fluctuation in their hormones.

 Since the LH levels in PCOS women are above the average threshold in the ovulation tests, you will get a false positive test result.

Even women without PCOS can have a surge in LH without ovulating. This happens when there is a condition called  Luteinizing Unruptured Follicle Syndrome (LUFS).

This dysfunction in ovulation affects nearly one in four women, and often happens over several cycles without their knowledge. 

Another factor that can throw off ovulation tests is if you are on certain fertility medication. These drugs cause an LH surge that tries to stimulate ovulation. If your body responds positively to these drugs, then your ovary will release an egg for fertilization.

Due to the fertility medication, your LH levels can surge over the average threshold and give you a false positive test result on these ovulation kits.

But again, standard ovulation tests can’t tell the difference between your body trying to ovulate and actually ovulating.

In anovulation, LH can rise and peak without ovulation actually happening. This frustrating occurrence of the failure to ovulate is the #1 cause of infertility. 

Learn More : Anovulation: Everything you need to know about the #1 cause of infertility.

The good news is that even if any of these processes are leaving you confused, advanced testing can tell you whether or not you’ve released an egg. More on this later. 

When you use an ovulation test, the first thing you’ll see is a dark strip that appears after you’ve dipped it in urine.

This is your “control” line. It doesn’t measure anything. Instead, it gives you a line to compare the new line to. This new line only appears after LH has risen above the test threshold. 

When reading an ovulation test, you’re not just looking for lines. You’re comparing the “control” on the test with the new line that represents your LH. 

The ovulation test comes pre-marked with a dark line. You have to look for a new line that is the same intensity of the one that came with the test, or even darker.

This is considered a “positive” ovulation test. In the days leading up to ovulation, the new line should grow darker until it is the same color or darker than the “control” line. 

But what if you’re not seeing two dark lines? 

Low levels of LH can cause a light-coloured or faint line on an ovulation test. This may make you wonder whether or not you’re really ovulating. Let’s talk about what different results on ovulation tests mean. 

What does a faint line on an ovulation test mean?

INITO Organic Blog Post Test strip feature pic2

A faint new line on an ovulation test indicates that your LH levels are high enough to trigger the test, but not high enough to stimulate ovulation. 

Remember when we said ovulation tests are 99% accurate at detecting LH? That means that even at low levels, LH will show up on ovulation tests. 

In a normal menstrual cycle, a faint line on an ovulation test could mean two things: 

  • LH is rising leading up to ovulation, but it still hasn’t reached that “surge” level that could stimulate ovulation. As you get closer to ovulation, the line will get darker, and then gradually lighter again after ovulation has happened. 
  • LH has already peaked, and is falling again in the days after ovulation. In the days following the test, you’ll notice the line getting even lighter and then ultimately disappearing. 

This is why it’s important to track your ovulation for several days, rather than testing on just one day. Testing twice a day for five days is ideal to avoid missing your peak LH levels. 

Even better is tracking your ovulation for several cycles. Maintaining your own calendar for this purpose over a period of time will help you understand and be in sync with your body better. 

Two lines, but one is lighter than the other

Two line on ovulation test

The lighter line represents your LH, while the other is the comparison or control line. One lighter and one darker line means that your LH is high enough to show up on the test, but may not have peaked yet.  

No second line on an ovulation test

No line on ovulation test

No second line on an ovulation test means that there is little to no LH in your urine. You’re not close to the beginning or end of ovulation. It may be that your LH surge has yet to happen, or has already occurred. 

Tracking your menstrual cycle monthly can help you more accurately predict when you’ll ovulate. 

Ovulation typically occurs 12-14 days before your next cycle and the exact cycle day for ovulation may be different for different cycle lengths. 

Some women notice that they ovulate much earlier or later than the predicted window. Learn more about early ovulation

If you’ve been tracking your cycle for several months and never see a positive ovulation test, it is best to consult your doctor for further steps. 

Faint line on an ovulation test for 5 days

faint line on an ovulation test for five days straight

If you see a faint line on an ovulation test for five days straight, it means LH is not peaking. We are used to seeing LH rise, then peak right before ovulation. But there are circumstances when LH may stagnate around the time when our bodies are trying to ovulate. 

  • Pituitary gland problems, like tumors or endocrine imbalances 
  • Eating disorders or malnutrition, which stress the body and make it harder to have a normal cycle 
  • High stress can also increase cortisol and cause problems with fertility

All the above conditions can alter your hormone levels causing you to have a not so dark line on the ovulation test.

If you’re noticing that lines on your ovulation test stay the same for days on end, see your primary care doctor or your gynecologist.

4 points to keep in mind while taking the ovulation test

Ensure that you have taken care of the following before taking an ovulation test:

  • You have not peed for a minimum of 2 hours.
  • You are not dehydrated or overhydrated. 
  • Your results may be skewed depending on the medical conditions that you have like PCOS, hormonal disorders, primary ovarian insufficiency.
  • Irregular periods may mean irregular ovulation and you may not get a positive result each time.

What if I get a negative ovulation test?

It is possible for your ovulation test to flash a negative result. Negative ovulation tests are not necessarily a bad thing. You may have had a negative ovulation test result due to the following:

  • Your peak time of LH is short and the test may have missed it.
  • Ovulation has not occurred due to underlying stress, intense physical activity, sudden lifestyle changes, or weight fluctuations.
  • You may have tested too early or too late into your cycle thereby missing the LH peak.
  • You may have taken the test incorrectly.

Don’t worry! There are some ways to break through to a positive result:

  • It is best to test twice a day to avoid missing the LH peak.
  • Begin taking the test around the time of your predicted fertile window. This is about 17 days before your next period date or three days before your possible ovulation day.  
  • Avoid using the first morning urine to test on an ovulation kit. If the LH surge occurs in the morning, it will take some hours to become apparent on the test. 

Faint line on an ovulation test when you’re not ovulating

A faint line on an ovulation test even when you are not ovulating means LH is present in your urine when it actually shouldn’t be. 

This can be because of a hormonal imbalance that can have different reasons.

Here are a few examples of when LH may be high at different times in your cycle:

  • Polycystic Ovary Syndrome (PCOS): This hormone imbalance can cause women to have high levels of LH throughout the month. Women with PCOS may never ovulate in a cycle, or ovulate sporadically. See our guide on tracking ovulation with PCOS for more on this. 
  • Perimenopause or Menopause: Women over 40 with high LH throughout the month may be seeing the hormone fluctuations of menopause. It’s possible that your body is transitioning out of your monthly cycle.
  • Luteinizing Unruptured Follicle Syndrome: This is when a mature egg doesn’t release from its follicle. In LUFS, LH often still peaks yet ovulation doesn’t happen. 

Do lines on an ovulation test mean I’m pregnant?

Nope. Pregnancy tests look for a totally different hormone called Human Chorionic Gonadotropin (hCG). Your ovulation test does not pick up on hCG, but on LH. 

Lines on an ovulation test mean that LH is high, which is something that anyway doesn’t happen during pregnancy. Typical LH levels in pregnancy are too low to be detected on an ovulation test. This is because the pregnancy hormone hCG takes over. 

So if you’re finding a positive ovulation test, you’re not pregnant. But you could still get pregnant in this cycle by taking advantage of your fertile window. Get to your bedroom and get busy!

How can I tell if I’ve really ovulated?

You’ve taken the ovulation tests for several days. You’ve watched the line go from light to dark and back. But now that you know that ovulation tests aren’t really telling you you’ve ovulated, you want more answers. 

The only way to definitively tell if you’ve ovulated is to track progesterone after your fertile window. 

Progesterone is a hormone central to the menstrual cycle and your pregnancy. After an egg is released, progesterone rises for about 5 days, working to prepare the body in case fertilization occurs. 

In your luteal phase (the last 12-14 days of your cycle before your next period), you can check for a rise in progesterone to tell if you really ovulated in this cycle. 

Checking progesterone at about a week before your next period can help you know if you released an egg in this cycle. 

This rise in progesterone is also sometimes associated with breast tenderness, bloating, food cravings, and other symptoms we associate with early pregnancy. 

Anovulation charts

Inito’s Fertility Monitor reliably tracks progesterone (PdG) during the luteal phase so that you know for sure if you could be pregnant. We take the uncertainty out of that two-week window between ovulation and pregnancy testing. 

Keep the confusion aside and track your fertile window through digital results given by the Inito Fertility Monitor.

 Inito gives you results like ‘Peak Fertility’ for tracking your fertile window and ‘Ovulation Confirmed’ for confirming your ovulation day.

Looking for more about testing for ovulation? Check out our guide on positive ovulation tests.


  • Ovulation tests predict ovulation by detecting LH, but they won’t tell you if you’ve really ovulated or not. 
  • The best way to predict ovulation is to track it for several cycles. 
  • One light line on an ovulation test often means that ovulation is either a bit far or has already happened. 
  • Even if you’re seeing positive ovulation tests, the only way to know for sure if you’ve ovulated is to track progesterone (PdG) during your luteal phase. Inito can help. 
  • Inito helps you track your ovulation by measuring actual LH levels and giving your hormone values in the form of charts. 
  • Inito gives you results like ‘Peak Fertility’ for tracking your fertile window and ‘Ovulation Confirmed’ for confirming your ovulation day.

Was this helpful?

  1. Artal-Mittelmark, R. (2022, February 22). Physiology of pregnancy – gynecology and Obstetrics. Merck Manuals Professional Edition. Retrieved March 17, 2022, from https://www.merckmanuals.com/professional/gynecology-and-obstetrics/approach-to-the-pregnant-woman-and-prenatal-care/physiology-of-pregnancy 
  2. Bashir, S. T., Gastal, M. O., Tazawa, S. P., Tarso, S. G., Hales, D. B., Cuervo-Arango, J., Baerwald, A. R., & Gastal, E. L. (2016). The mare as a model for luteinized unruptured follicle syndrome: Intrafollicular endocrine milieu. REPRODUCTION, 151(3), 271–283. https://doi.org/10.1530/rep-15-0457 
  3. How to use Ovulation Kits & fertility monitors. American Pregnancy Association. (2022, January 6). Retrieved March 7, 2022, from https://americanpregnancy.org/getting-pregnant/infertility/ovulation-kits/ 
  4. Kumar, P., & Sait, S. F. (2011). Luteinizing hormone and its dilemma in Ovulation Induction. Journal of Human Reproductive Sciences, 4(1), 2. https://doi.org/10.4103/0974-1208.82351 
  5. Mesen, T. B., & Young, S. L. (2015). Progesterone and the luteal phase. Obstetrics and Gynecology Clinics of North America, 42(1), 135–151. https://doi.org/10.1016/j.ogc.2014.10.003 
  6. Miller, P., & Soules, M. (1996). The usefulness of a urinary LH kit for ovulation prediction during menstrual cycles of normal women. Obstetrics & Gynecology, 87(1), 13–17. https://doi.org/10.1016/0029-7844(95)00352-5 
  7. Vitale, S. G., La Rosa, V. L., Petrosino, B., Rodolico, A., Mineo, L., & Laganà, A. S. (2017). The Impact of Lifestyle, Diet, and Psychological Stress on Female Fertility. Oman medical journal, 32(5), 443–444. https://doi.org/10.5001/omj.2017.85

Releted Content