Chat with us, powered by LiveChat Is it normal for OPK to get darker without showing positive results?

Is it normal for OPK to get darker without showing positive results?

By MomMed | 24 June 2022 | 0 Comments

Is it normal for OPK to get darker without showing positive results?


For most women trying to get pregnant, ovulation predictor kits have come down as a boon. It helps them keep a track of their ovulation and thus time their intercourse to increase the chances of pregnancy. Women trying to conceive subscribe to opk charting where they take ovulation tests for a few days in a row to detect the LH surge. But not everything is smooth all the time. Sometimes, as some women have already experienced, you might see your opk getting darker but not giving you a positive result. Why does that happen? Here is everything explained for you.

What Is OPK

OPK stands for ovulation predictor kits. OPK charting is a common practice among women trying to get pregnant. These kits allow women to take an at-home ovulation test every month to track their cycle. The tests are designed to detect the level of Luteinizing Hormone(LH) in the urine.
Two kinds of tests are available, one is digital and the other is manual. The manual test looks similar to that of a pregnancy test. You have to pee on the stick and wait for it to absorb the urine. A single line indicates that the test is working properly. However, just the appearance of a double line is not enough to infer that your body is preparing for ovulation.
The second line needs to be either as dark as the first line or darker than that for you to be confirmed about ovulation taking place in the next 24-48 hours.

When Does Ovulation Occur

For OPK charting to be accurate, it is better if you have an idea of when you usually ovulate. Ovulation normally occurs around the middle of each menstrual cycle. So, if you have a 28-day cycle, then you will most likely ovulate on the 14th day.
However, all women do not have a cycle of the same length. While some might have longer ones, others might have cycles as short as 20 days. Some women might suffer from PCOS where irregular periods are quite common. In such cases, it is better to consult your doctor and figure out the approximate time of ovulation, so that you can start taking the at-home ovulation test at the right time.

When To Take The Test

Ovulation predictor kits are designed to catch the LH surge that occurs in a female body 24-48 hours prior to ovulation. Therefore, it is understandable that the test needs to be taken a few days before the ovulation occurs so as to notice the surge.
If you are aware of your approximate date of ovulation, then it's better to start testing 4-5 days prior to that. Suppose, you are supposed to ovulate on your 16th day, you must start testing from the 12th or 13th day of your cycle. Testing twice a day is recommended. It is because the surge is usually for a short time and there are high chances of missing it.


What If The OPK Gets Darker But Doesn’t Give A Positive Result

Unlike the digital opk tests, analyzing the manual test result can often be confusing. As discussed earlier, the second line on the test should not just appear but has to be of the same darkness as the first line or more for a positive ovulation result.
If you are taking the test for a few days in a row, there are chances that you might encounter a condition where you see the second line getting darker every passing day, but it never gets dark enough to be taken as a positive ovulation result.
There can be many reasons leading to this. First, it is important to know that your body keeps producing lower levels of LH throughout the cycle, even though the surge occurs only before a few days of ovulation. Therefore, if you have started testing too early or your ovulation is getting delayed for some reason, then you might see the second line getting brighter each passing day but it doesn’t show a positive result because the surge hasn’t happened yet.
For some women, the surge isn’t that intense and the result interpreted as positive has a second line fainter than that of the first line. In this case, too, you will have the line getting darker leading up to an actual positive result that you might think isn’t.
Another condition in which the opk gets darker but doesn’t give a positive result is hormonal imbalance. Usually, in women with PCOS or other medical issues where hormonal fluctuations are a common symptom, the second line can often get darker with time but never dark enough to indicate a positive result because the surge actually doesn’t happen.
In any of these cases, it is normal to feel confused and anxious irrespective of the pre-requisite knowledge you have. Therefore, feel free to consult your doctor.

What After A Positive Ovulation Result

A positive ovulation result would mean that you will be ovulating within 24-36 hours. To increase the chances of pregnancy, you should have sex for the next three days continuously so that when the egg gets released from the ovary, the sperm waits for it in the fallopian tube. Keep in mind that sperm can survive in the female body for 3-5 days whereas an egg will dissolve within 24 hours of ovulation.


As explained above, there can be many reasons for your opk getting darker and not showing positive. Since the hormone is present in your body at all times, the test can detect its amount. Fluctuating levels due to underlying health conditions can lead to varying shades of the second line.
If you have been taking the test for quite some time and feel that you did not ovulate, then you must get in touch with your doctor to find out. in addition to the ovulation predictor kits, you should also try to identify other bodily signs like rising basal body temperature, sore breasts, and the changing nature of cervical mucus to know that you are going to ovulate.

More Related: New to TTC PCOS IVF

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