A pregnancy test is a way to find out if someone is pregnant. It can be used by a doctor or a person themselves. One way to find out if someone is pregnant is to test their pee or blood for the hormone that is in it (human chorionic gonadotropin). Another one is using an ultrasound. Testing blood for hCG will give an early answer to pregnancy. Almost all pregnant women will have a positive urine pregnancy test one week after the first day of their missed menstrual period.
The first way of test for pregnancy is by testing a blood sample with an antibody-based assay that detects human chorionic gonadotropin (hCG). A urine test can also be used and the level of hCG increases in pregnant women’s body and this can be measured. An antibody-based assay (enzyme-linked immunosorbent assay, ELISA) is another way to test for pregnancy. A hormone that is made in large amounts by cells that will later make up the placenta, human chorionic gonadotropin (hCG), can be detected with the pregnancy test by the woman herself, her doctor, or over-the-counter at a pharmacy.
If you have missed your last menstrual period or have taken more than 14 days past ovulation it is recommended to take a pregnancy test. The first day of a woman’s last menstrual cycle is called the first day of her LMP and this day is counted as Day 1. So if a woman’s period does not start on the expected date, she should go for a test after 3 weeks past her LMP. The day when you actually conceived can be calculated by using an online Pregnancy Calculator or you can take your pregnancy test at least one week after your LMP in order to know you are pregnant or not.
The pregnancy hormone helps a newly fertilized egg to grow and develop. In order to get a positive result from a pregnancy test, the woman needs to be producing this hormone in her urine at least ten days after she conceives. Home self-tests for pregnancy measure the same amount of hCG as blood tests. A blood test is considered more accurate because it detects hCG sooner than a urine test, but at this time both are fairly good measures of whether or not you are pregnant.