Can Ovarian Cysts Cause a False Positive on a Pregnancy Test?

Generally speaking, having an ovarian cyst will not cause you to have a false positive on a home pregnancy test. However, there are some cases in which a certain type of ovarian cyst can interfere with the results of a pregnancy test. There are also some cases in which a pregnancy test may be used by your health care provider to identify a certain type of ovarian cyst.

If you have a corpus luteum cyst, it is possible for you to have a false positive pregnancy test. During ovulation, an egg is released from a follicle. After this occurs, the follicle becomes something called a corpus luteum. A corpus luteum will typically break down and it will disappear from your body. However, in some cases the corpus luteum may stick around. If it does, it can fill with blood or fluid and will stay on the ovary. When this occurs, it is known as a corpus luteum cyst. A corpus luteum cyst does not produce any other symptoms, and typically only will appear on one ovary. Because the corpus luteum contains hCG (human Chorionic Gonadotropin), it is possible that a pregnancy test will detect the presence of this hormone as being positive for pregnancy, even though you are not pregnant. In some cases, your helath care provider may use a pregnancy test to determine whether your ovarian cyst is indeed a corpus luteum cyst.

There are some other things that can cause false positive home pregnancy test, other than this type of ovarian cyst. In some cases, you might have a chemical pregnancy, which is essentially an early miscarriage. You might be experiencing evaporation lines, which occurs when some of the urine on the pregnancy test leaves a mark on the test results area, indicating a false positive. In addition, certain drugs that you use for fertility may interfere with your test as these medications may include hCG. Some of the fertility medications that could give a false positive might include Profasi, Pregnyl, and Novarel, but only if the test is taken within one to two weeks of getting the shot of the fertility medication.

  • Amalie Ramsey

    I have a 25 or 26 day cycle. I am 43 years old and have been TTC for the past two or three months. My first day of the cycle was Jan 25. I had blood hcg taken (too early I think) on Feb 13th and came back negative. I took three HPT on Feb 12. Two were very faint and one read nothing. I also starting taking “Fertile Balance”, a cream which has 20 IU of progesterone on Feb 12 (after the BFP) thinking that being older my progesterone levels are down. (BTW, my bloodwork indicated normal levels for hormones as well). The next 5 days were negative until yesterday I received two positives and one neg. Today, three were negative so I had more Blood hcg done. What could this be???

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