When you experience the initial indications of pregnancy, you as expected head to the drug store to locate a good pregnancy test. Have you ever speculated how they work? Well Over-the-counter pregnancy experiments try to find the existence of the “pregnancy hormone” in urine. The test you take up in your physician’s office looks for the same hormone in your blood. Beware of false positive home pregnancy test in low quality or outdated cards.

All pregnancy tests work by identifying early hcg level pregnancy test a certain hormone in the urine or blood that will be only present when a woman is expecting. This hormone is called human chorionic gonadotropin (kohr-ee-ON-ihk goh-NAD-uh-TROH-puhn), or hCG. It is also called the gestation hormone. hCG is made when a fertilized egg implants in the uterus for early pregnancy response test. This regularly happens about six days after the egg and sperm merge. But studies show that in up to 10 percent of women, implantation does not occur until much later, after the first day of the missed period. The quantity of hCG quickly builds up in your body with each passing day you are pregnant. The hCG will make your placenta to generate progesterone after the implantation of the embryo, which is essential to prevent the embryo’s elimination.

As it takes time for the hormone to build up to measurable levels, the majority of the over-the-counter early detection pregnancy test work well when taken a few days or a week subsequent to your missed period. Some brands argue to be accurate, but all women ovulate at dissimilar times of their phase, so this may or may not be true for you.

The most precise test is completed in your doctor’s office with a pregnancy test. A blood test can spot much lower levels of the pregnancy hormone than urine tests. If you get a negative reading from your drug store pregnancy examination, but you still “feel” pregnant, you’ll want to make an engagement with your physician. Planned Parenthood offices also offer wide range of pregnancy tests and exams.