And while they do pretty well at what they're supposed to do — detect the pregnancy hormone human chorionic gonadotropin (hCG) — to get accurate results, you need to follow package instructions as written. So no, you can't reuse a pregnancy test.

Can I take another pregnancy test the same day?

If you get a negative result and want to be extra sure, take a second test. Just be sure to wait a few days—taking a second test in the same sitting won't give you a different result. When should you take a pregnancy test?

Are pregnancy test kits reusable?

It's impossible to conduct that reaction for a second time, accurately. New agents must be used so that the results are accurate. Once you have used a pregnancy test kit, discard it and open up a new one.