Urinalysis refers to a series of tests that can be run to assess the chemical quality of the urine. Typically, this is done by dipping a strip into the urine sample, and chemical reactions change the color of the pads. Urine pH is a test that analyzes the acidity or alkalinity of a urine sample. Many diseases, your diet, and the medicines you take can affect how acidic or basic your urine is. For instance, results that are either too high or low can indicate the likelihood that your body will form kidney stones. If your urine is at an extreme on either the low or high end of pH levels, you can adjust your diet to reduce the possibility of kidney stones.