Show An early pregnancy test can read positive as soon as 11-15 days after conception, 1 day after a missed period An early pregnancy test can read positive as soon as 11-15 days after conception, 1 day after a missed period. However, more accurate results can be obtained 2 days after a missed period. A home pregnancy test detects the presence of human chorionic gonadotropin (hCG), which is produced in a pregnant woman. Traces of hCG can be seen in urine 3-4 days after the fertilized egg implants in the uterus, and the amount doubles every 48 hours. When there is enough hCG in the body, a pregnancy test can detect it and produce a positive result. If your periods are irregular, however, and your test result is negative, you should repeat a home pregnancy test after 1 week. How accurate are home pregnancy tests?Home pregnancy tests are quite reliable and usually 99% accurate. However, it is critical to carefully follow the instructions on the package.
Here is how the tests work:
What can cause a false-positive pregnancy test result?In rare cases, a false-positive outcome can be caused by:
Other reasons for a false-positive result include:
QUESTIONThe first sign of pregnancy is most often: See AnswerWhat tests are done to confirm pregnancy?In addition to false-positive results, a home pregnancy test may show a false-negative result, especially if you tested too early or if the kit was defective. In order to confirm the results of a home pregnancy test, talk to your doctor to undergo additional tests. Your doctor may order urine or blood tests:
If pregnancy is confirmed, an abdominal ultrasound can be done to assess the development and health of the fetus. When should you see a doctor?Regardless of your pregnancy test results, consult your doctor if you develop any of the following symptoms:
If your home pregnancy test result is positive, you should see your doctor to both confirm the pregnancy and begin prenatal care. Health NewsMedically Reviewed on 3/8/2022 References Image Source: iStock Images American Pregnancy Association. What is HCG? https://americanpregnancy.org/getting-pregnant/hcg-levels/ Betz D, Fane K. Human Chorionic Gonadotropin. [Updated 2021 Aug 11]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022. https://www.ncbi.nlm.nih.gov/books/NBK532950 Memon N. How Soon Will a Pregnancy Test Read Positive? MedicineNet. https://www.medicinenet.com/how_soon_will_a_pregnancy_test_read_positive/article.htm Is 7 days after conception too early to test?Our pregnancy tests can detect the HCG pregnancy hormone as early as 7 days after conception or 21 to 24 days after the first day of your last menstrual period (LMP). Most pregnancy tests aren't accurate until at least 7 days after fertilization, which is when the embryo implants into your uterus.
How long does it take for hCG to show up in urine?hCG is a hormone produced by your placenta when you are pregnant. It appears shortly after the embryo attaches to the wall of the uterus. If you are pregnant, this hormone increases very rapidly. If you have a 28 day menstrual cycle, you can detect hCG in your urine 12-15 days after ovulation.
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