The pH of urine, also known as the pH of urine, is generally 6.0-6.5 in fresh human urine, and can also be neutral or weakly alkaline, related to the acidic or alkaline substances excreted in urine. There are many factors that affect the pH of urine, such as the type of diet. People with a predominantly vegetarian diet have alkaline urine with a high pH, while people with a predominantly meat-based diet have acidic urine with a low pH. In addition, the pH of urine can also be affected by some drugs and some diseases and other factors, such as alkalosis, urinary retention, which can break down urea-producing ammonia bacteria and cause urinary tract infections, and the use of alkaline drugs such as thiazides and sodium bicarbonate, which can also cause alkaline urine.