A pregnancy test from the store costs about $3 on average. A blood test that you get from a lab or doctor's office costs an average of $64. You might be able to get a free pregnancy test at a women's ...

You're probably familiar with the scene. Pulling the little box out of the drug store bag, ducking into the bathroom, and then waiting and staring at a little plastic stick waiting for it to change.

You know how to use them, but how exactly do they work? A home pregnancy test detects the presence of the pregnancy hormone, human chorionic gonadotrophin (hCG), in your pee. Your body starts to ...