How exactly does it work? Does it measure acids & bases or what?
2007-04-22 10:13:26 · 5 answers · asked by accebere 2 in Science & Mathematics ➔ Biology
the urine of a pregnant woman contains HCG. a pregnancy test cartridge has a piece of filter type paper with a region that is coated with an antibody that is manufactured to attach to the hcg molecule. a color indicator has been previously attached to this antibody molecular complex, so that a line will appear in the coated area of the paper if the woman is pregnant (has HCG), or no line if she isn't (no HCG).
2007-04-22 17:15:42 · answer #1 · answered by bad guppy 5 · 0⤊ 0⤋
"A pregnancy test measures a hormone called human chorionic gonadotropin (HCG). HCG is a hormone produced during pregnancy. It appears in the blood and urine of pregnant women as early as 10 days after conception."
2007-04-22 17:17:08 · answer #2 · answered by Anonymous · 0⤊ 0⤋
I'm pretty sure when a woman gets pregnant, her body starts producing a certain horomone. This horomone can be tested through a urine sample, so basically, when you pee on the test strip, it will measure for that certain horomone. If you have it, then you're pregnant.
I'm pretty sure that's what happens anyway >.<
2007-04-22 17:20:12 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It tests for a certain hormone (HCG) produced by the fetus, and therefore present ONLY in pregnancy.
2007-04-22 17:16:58 · answer #4 · answered by Anonymous · 0⤊ 0⤋
idk
2007-04-22 17:15:38 · answer #5 · answered by Lindssbabii 2 · 0⤊ 1⤋