evidence: Some examples of DIY pregnancy tests include the salt test and the sugar test. If someone were to attempt either of these, they would need a method for measuring out their urine as well as salt or sugar. For the salt test, it’s recommended to mix equal parts urine and salt. If the salt clumps together, that indicates a positive result; if the salt does not clump, the result is negative. [2] To try out the sugar test, it’s recommended that someone mix equal parts urine and sugar. If the sugar has dissolved after a few minutes, this indicates a negative result. If the sugar clumps, it is considered a positive result. [2] So far there is no scientific evidence to support either of these tests, meaning you should not rely on the results of this experiment to confirm or deny a pregnancy. [2] [...] Most of the reactions people may notice when attempting a DIY pregnancy test can be chalked up to their urine interacting with whatever product they’ve mixed it with. Urine tends to be slightly acidic, with a pH of 6.0 to 7.5. [6] It’s normal and expected to see some sort of reaction when mixing something that is more basic or neutral, like baking soda, toothpaste, or salt, with something acidic. [7-9]