Test Quick Guide. A pregnancy test measures a hormone in the body called hCG, produced during pregnancy by the placenta and found in the blood and urine. Testing for hCG can be done as soon as 10 days after conception to help determine if you are pregnant. Measuring hCG can also help identify complications during pregnancy. Use code “HEALTHLINE25” for 25% off. $249 AT EVERLYWELL. Healthline 's review. The Everlywell Women’s Health test analyzes female hormones like estradiol, progesterone, luteinizing hormone Pregnancy tests are a quick and easy means to know whether you are pregnant. Most at-home pregnancy tests work by detecting the levels of the hormone human chorionic gonadotropin (HCG) in your urine. HCG is also known as the pregnancy hormone because the levels of this hormone increase considerably when you get pregnant. It may occur at any time during the day or night. If nausea happens for no apparent reason, especially with other possible signs of pregnancy, it may be a good idea to take a pregnancy test. 6 Certain conditions can also affect how quickly pregnancy tests expire. It is generally recommended to store pregnancy tests at room temperature, or at least between 36 and 86 degrees Fahrenheit . If you leave your test in a blistering hot or freezing cold car, for example, it might be safer to buy a new one. As it turns out, sometimes, you can get a positive pregnancy test mere days after conceiving. The earliest we’ve heard from our Peanut mamas is 3 days after unprotected sex. But it’s still considered too early for an accurate result, so while you may get a positive 3 days after unprotected sex, there is a chance it could be a false-positive In this article. A home pregnancy test detects the presence of the pregnancy hormone, human chorionic gonadotrophin (hCG), in your urine. Your body starts to produce hCG when a fertilized egg implants in your uterus (your womb). HCG is secreted by the cells which will go on to form your baby’s placenta. It can be detected in your urine from DNA Paternity Test. A DNA paternity test is nearly 100% accurate at determining whether a man is another person’s biological father. DNA tests can use cheek swabs or blood tests. You must have the test done in a medical setting if you need results for legal reasons. Prenatal paternity tests can determine fatherhood during pregnancy. CAMQI.