The lowdown: That plus sign
on your pregnancy test means there is human chorionic gonadotropin (hCG), a hormone made by the placenta after conception, in your system — sending estrogen and progesterone levels surging.
Not exact matches
No matter how carefully you've planned your
pregnancy, when the blue line shows up
on your
pregnancy test, it takes
on a whole new
meaning.
Most modern
pregnancy tests rely
on the detection of hCG using other
means: The standard home
test kit, for example, flags hCG with prepared antibodies.