evidence: Check out any TTC online discussion on the salt pregnancy test, and you’ll likely see many posted pictures of salty pee in clear cups with questions like, "Is this positive?" That’s because no one seems exactly sure what they’re looking for and how to distinguish a positive from a negative. [...] According to various sources, a positive salt pregnancy test will be "milky" or "cheesy" in appearance. The claim is that salt reacts with human chorionic gonadotropin (hCG), a hormone that’s present in the urine (and blood) of pregnant women. [...] The salt pregnancy test is best done as an all-in-good-fun experiment. It has no medical backing, scientific basis, or physician endorsement. There’s no reason to believe salt reacts with hCG. There are no published studies supporting this idea or the test in general.