Same Test Most Doctors Use Accurate Results in 2 Minutes #1 Most Trusted Brand* Clean Grip Handle Clinically Tested Easy to Read Results Individually Wrapped #1 Selling UTI Test!** Fast and Easy AZO Test Strips can help detect if you have a urinary tract infections (UTI). This information will allow you to take an active role with your physician in the management of your health. AZO Test Strips use the same tests most doctors use. AZO Test Strips test for Leukocytes (white blood cells) and Nitrite for greater reliability. *#1 Most Trusted Brand based on Total AZO Brand Nielsen data through 7/8/17 and the 2017 Pharmacy Times Survey (Urinary Pain Relief and Cranberry Supplement categories). **#1 selling UTI test based on Nielsen data through 7/8/17.