How Long After Ovulation Can You Take A Pregnancy Test?
While testing early is very appealing, you really should wait until the day after your period should have arrived before taking a pregnancy test. All pregnancy tests currently available are more likely to show a correct positive result if you wait this long. If you have been ttcing (tryng to conceive) for a while, you will most likely not have the patience to wait that long to test.
It is important to understand that the time that it takes for a fertilized egg to implant in the uterine wall can vary from woman to woman. Research suggests that most pregnancies, about 85%, occur within 8 to 10 days past ovulation. However, depending on the sensitivity of the test you are using, you may not get an accurate result on a home pregnancy test until a few days later.
Clinical blood and urine tests, performed by your health care provider, may be more accurate and produce an earlier positive than home pregnancy tests. These tests can detect a pregnancy as little as 24 hours after implantation, or about 9 days after ovulation. However, these tests can be expensive, inconvenient, and time consuming. For this reason, many women choose to use home pregnancy tests.
Home pregnancy tests the level of hCG (Human Chorionic Gonadotropin) present in a woman’s system. The concentration of hCG in the woman’s urine will increase as the pregnancy progresses. At 10 dpo (days past ovulation), for example, the hCG level will be about 25 mIU in a typical pregnant woman. The level of hCG, in a healthy pregnancy, usually doubles every 48 to 72 hours. Home pregnancy tests have different sensitivity levels. A pregnancy test with a detection sensitivity of 25mIU will usually show a positive result at 10 or 11 dpo. If you use a home pregnancy test that detects hCG level that are 100 mIU or higher, you won’t get a positive result until you are closer to your period due date.
In addition, the rate at which hCG shows up in the system varies from one woman to the next. For this reason, if you test early with a very sensitive test, you could still wind up with a false negative. You should follow up this early test with an additional test a few days later.