How does a pregnancy test work? All pregnancy tests detect the hormone human chorionic gonadotrophin (hCG), which starts to be produced around 6 days after fertilisation. Most pregnancy tests come in a box that contains 1 or 2 long sticks. You pee on the stick and the result appears on the stick after a few minutes. Pregnancy tests work by detecting the presence of the hormone, human chorionic gonadotropin (hCG). hCG is a hormone produced by cells in the placenta. Its production starts from the point at which the developing embryo attaches to the uterus, 6-12 days after conception.
How does a pregnancy test work step by step?
Pregnancy tests work by reacting to the amount of hCG in either your urine or blood. In a urine test, a piece of reactive paper detects the hCG. This might then show a plus sign, double vertical lines or even the word “pregnant.” Different tests will show a positive result in unique ways.
How do I know if my pregnancy test is positive or negative?
If only one coloured line appears on the strip, the test is negative and you are not pregnant. If two coloured lines appear, the test is positive, which means you are pregnant. Even if the lines are light in colour, you may assume you are pregnant. – hCG remain in your body after a birth or miscarriage.
Do pregnancy tests start with one line?
But after taking a home test, your excitement may turn to confusion as you notice a faint positive line. With some home pregnancy tests, one line means the test is negative and you’re not pregnant, and two lines mean the test is positive and you are pregnant.
How does a pregnancy test work?
Pregnancy tests work by detecting the presence of the hormone, human chorionic gonadotropin (hCG). hCG is a hormone produced by cells in the placenta.
How to take a pregnancy test at home?
Take the home pregnancy test in the morning when hormone levels of hCG are highest. Use one of the following techniques: Place the test in a woman’s urine while she urinates. Collect urine in a sterile container and dip the test into it. Collect urine in a sterile container and use a dropper to drop the woman’s urine onto the test.
Can a pregnancy test be done with a blood test?
Pregnancy Tests Pregnancy tests look for a special hormone – human chorionic gonadotropin (hCG) – that only develops in a woman’s body during pregnancy. These tests can use either your urine or blood to look for hCG. At-home pregnancy tests are inexpensive and commonly used urine tests.
How do pregnancy tests detect hCG?
hCG is eliminated from the mother’s body through urine, and this is what pregnancy tests use to detect it. Urine is applied to a sample pad at the end of the test stick and is drawn up the strip. The first area it reaches is the reaction zone. If hCG is present in the urine, here it binds to proteins called antibodies.