Positive OPK when Pregnant?






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Typically, women who are studying their OPK are trying to get pregnant, not trying to determine if they are pregnant. And, while you wouldn’t think that an OPK could actually test positive while you are pregnant, they actually can. However, they are rather unreliable, so it is a good idea to stick with a pregnancy test or a trip to your doctor’s office to know for sure.

1. What’s the difference?

When you choose to take a pregnancy test, you are expecting a simple answer. Either you are pregnant or you are not. These tests are 99% accurate in determining pregnancy. However, when you take an OPK and it shows a positive reading, sometimes you may be pregnant, but sometimes it may show a negative reading and you still are pregnant.


The difference between the two tests is fairly straight forward. While an OPK looks for the LH hormone that is present just prior to ovulation, a home pregnancy test checks for the hCG hormone. While you might find your LH to be elevated while you are pregnant, they are not entirely reliable, and you should never use one test to test for the other one’s function.

2. How do I know if I am pregnant?

The only way to truly confirm if you are pregnant is to perform an at home pregnancy tests or to have one administered in your doctor’s office. However, the testing that you can do at home is the same style testing that is completed in the doctor’s office and you will not be forced to pay an office visit fee.


It is important to understand that OPKs work very differently from home pregnancy kits. For example, a pregnancy test will only show positive if hCG, the pregnancy hormone, is present. However, it is much more difficult to read an OPK. With an OPK, there is a control line and a test line. The test line will appear darker or lighter depending on the amount of LH that is found in your urine. This amount can vary from time to time, so it is difficult to determine if you are pregnant based on this alone.

3. Cautions

If you have taken an OPK as a home pregnancy test, it is important that you realize that your results are not entirely accurate. Even though you may think that you are pregnant because you have had an elevated LH level for longer than usual, you may find that you have actually ovulated more than once this month, which is a possibility.


However, it is a good idea to take a pregnancy test if you notice an elevated LH level at a time when you should not yet be ovulating. You may find that you are pregnant and while an OPK test will not prove that you are pregnant, it may be an indicator for you to take a pregnancy test as well.

4. Issues with Medications

It is also possible for OPKs to be inaccurate due to certain types of medications that you are taking. For example, it is common for women who are taking the fertility drug Clomid to receive a false positive on these tests.


For this reason it is ill advised to rely on an OPK as a pregnancy test and expect accurate results. Because of their unreliability to test for ovulation in these circumstances, they will become even more unreliable when testing for pregnancy.

5. Conclusion

OPKs are extremely unreliable when it comes to predicting pregnancy. It is best to stick with a home pregnancy test so that you will not have to doubt the results you are seeing. You will also find that a home pregnancy test is much less expensive than an OPK so you will actually be spending more money if you choose to use one for a pregnancy test instead of an ovulation predictor as they were intended.

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When you are selecting an OPK, you should use them as intended which will help you time your intercourse around your ovulation cycle. This will give you a better chance of getting pregnant and will provide you with the tools needed to know when you should be ovulating each month. If you receive an elevated reading during a time when you are not ovulating, feel free to take a pregnancy test at this time.

Positive OPK when Pregnant?, 5.0 out of 5 based on 1 rating

Valerie Wisniewski, RN

Ms. Wisniewski has over 15 years experience as a labor and delivery nurse, having also worked previously as a nurse midwife in the Philippines and India. She enjoys empowering women and providing family centered care to women from all cultural and educational backgrounds.