Woman's wellbeing. Detect urinary tract or bladder infections. Test for both nitrite & protein. Easy-to-use. Results in 1-2 minutes. Toll free help line. For IN VITRO (external) diagnostic use. Test results can be affected if using antibiotics or more than 500mg of ascorbic acid (Vitamin C), taking relief tablets (Phenazopyridine HCP), or if urine has not been retained in the bladder for at least 4 hours.