No scientific data suggest that anything in a person's urine reacts with salt to indicate pregnancy. Even before the invention of modern pregnancy tests, people did not typically use salt-based tests.
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 not believed to be fully accurate. It is more like other DIY pregnancy tests, which are not reliable either. There is no reliable evidence, either from studies or by major medical organizations that suggest that the salt pregnancy test can accurately tell you if a female is pregnant or not.
All you need to do is mix your morning urine and salt in a clean bowl and then wait for a few minutes. If a mixture changes its appearance and turns milky or contains foam, the pregnancy test result with salt is positive. If there is no change in the colour, it suggests no possibility of pregnancy.
A pregnancy test can tell whether you're pregnant by checking a sample of your urine (pee) or blood for a specific hormone. The hormone is called human chorionic gonadotropin (hCG). High levels of hCG are a sign of pregnancy.
Normally, the color of urine can be light yellow or yellow to transparent. But for a pregnant woman, this change is more prominent and noticeable. The urine color can change from light yellow to dark yellow. It can go to an orange-yellow shade too.
The toothpaste pregnancy test involves putting a few drops of urine on some white toothpaste. After stirring the mixture, the person watches for any foaming or color change, which supposedly indicates a positive result. However, this is not an accurate way to detect pregnancy.
What does a positive toothpaste pregnancy test look like? If you're expecting, the toothpaste will supposedly begin to foam or turn blue (or both).
Consuming too much salt can increase thirst and contribute to dehydration, which in turn may cause your urine to be darker, more concentrated, and cloudier ( 6 ).
Normal Results
For adults, normal urine sodium values are generally 20 mEq/L in a random urine sample and 40 to 220 mEq per day. Your result depends on how much fluid and sodium or salt you take in.
The current meta‐analysis found that approximately 93% of dietary sodium is excreted in urine.
Urine becomes increasingly acidic as the amount of sodium and excess acid retained by the body increases.