Bought a kit but havent used it yet, period is due in two days. Im just curious how it actually detects pregnancy and when is the right time to do it for accurate result. First time so pls bear with the basic question.
My doctor explained the kit detects the hCG hormone in your urine, which only appears when you are pregnant. That's why first morning urine works best, the hormone is most concentrated then. Two lines means it detected enough hCG.
It checks for the pregnancy hormone hCG in your urine. If it's there, the second line shows up. That's why testing too early can show negative, the hormone level is still too low to catch. Wait for the missed period.
Basically it picks up the hCG hormone your body makes once pregnant. My app explained that levels double every couple of days early on, so a faint line can get darker if you retest later. Morning urine gives the strongest reading.